Buffer Overflow
A buffer overflow occurs when a program writes more data to a memory buffer than it was allocated to hold, causing the excess data to spill into adjacent memory regions.
How It Works
A buffer overflow occurs when a program writes more data to a memory buffer than it was allocated to hold, causing the excess data to spill into adjacent memory regions. This overwrites whatever data or code exists there, corrupting program state and potentially giving attackers control over execution flow.
Stack-based overflows are the most common variant. When a function allocates a fixed-size buffer on the stack and then copies user-controlled input without proper bounds checking, attackers can overflow past the buffer to overwrite the function's return address. When the function completes, instead of returning to legitimate code, execution jumps to attacker-specified memory containing malicious shellcode. Heap-based overflows work differently—they corrupt heap metadata like chunk size fields or free list pointers, leading to arbitrary memory writes when the allocator processes the corrupted structures.
Modern exploitation bypasses defensive mechanisms through techniques like Return-Oriented Programming (ROP), which chains together existing code snippets to avoid non-executable memory protections. Attackers may also use heap spraying to reliably position shellcode at predictable addresses, defeating address randomization.
Impact
- Remote code execution — attacker gains ability to run arbitrary commands with the privileges of the vulnerable process
- Privilege escalation — exploiting kernel or setuid program overflows to gain root/SYSTEM access
- Denial of service — crashes and memory corruption that render systems unusable
- Information disclosure — reading sensitive data from adjacent memory regions that should be inaccessible
- Authentication bypass — overwriting security-critical variables like permission flags or user IDs
Real-World Examples
Fortinet FortiOS suffered a critical buffer overflow (CVE-2025-32756) that allowed unauthenticated remote attackers to execute code as root on firewalls and VPN gateways. Attackers actively exploited this to compromise enterprise network perimeters before patches were available.
The Slammer worm from 2003 exploited a stack overflow in Microsoft SQL Server, spreading to 75,000 hosts in ten minutes by sending a single malformed UDP packet that overwrote the return address with shellcode. No authentication was required.
OpenSSH historically contained a heap overflow in challenge-response authentication that allowed pre-authentication remote root compromise on Unix systems, demonstrating how memory corruption in privileged network services creates maximum impact scenarios.
Mitigation
- Memory-safe languages — Rust, Go, and modern managed languages prevent buffer overflows by design through automatic bounds checking
- Stack canaries — random values placed before return addresses that detect corruption before control transfer
- Address Space Layout Randomization (ASLR) — randomizes memory locations making exploitation less reliable
- Data Execution Prevention (DEP/NX) — marks memory regions as non-executable, preventing direct shellcode execution
- Bounds checking — validate input sizes before copying, use safe functions like
strncpyinstead ofstrcpy - Fuzzing and static analysis — automated testing to discover overflows before deployment
Recent CVEs (36785)
iconvdata/ibm930.c in GNU C Library (aka glibc) before 2.16 allows context-dependent attackers to cause a denial of service (out-of-bounds read) via a multibyte character value of "0xffff" to the. Rated medium severity (CVSS 5.0), this vulnerability is remotely exploitable, low attack complexity. Public exploit code available and no vendor patch available.
The write_one_header function in mutt 1.5.23 does not properly handle newline characters at the beginning of a header, which allows remote attackers to cause a denial of service (crash) via a header. Rated medium severity (CVSS 5.0), this vulnerability is remotely exploitable, low attack complexity. Public exploit code available and no vendor patch available.
Heap-based buffer overflow in the process_copy_in function in GNU Cpio 2.11 allows remote attackers to cause a denial of service via a large block value in a cpio archive. Rated medium severity (CVSS 5.0), this vulnerability is remotely exploitable, low attack complexity. Public exploit code available and no vendor patch available.
Integer underflow in the ksba_oid_to_str function in Libksba before 1.3.2, as used in GnuPG, allows remote attackers to cause a denial of service (crash) via a crafted OID in a (1) S/MIME message or. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, low attack complexity.
Heap-based buffer overflow in the cli_scanpe function in libclamav/pe.c in ClamAV before 0.98.5 allows remote attackers to cause a denial of service (crash) via a crafted y0da Crypter PE file. Rated medium severity (CVSS 5.0), this vulnerability is remotely exploitable, low attack complexity. Public exploit code available.
Stack-based buffer overflow in the ttusbdecfe_dvbs_diseqc_send_master_cmd function in drivers/media/usb/ttusb-dec/ttusbdecfe.c in the Linux kernel before 3.17.4 allows local users to cause a denial. Rated medium severity (CVSS 6.1), this vulnerability is low attack complexity. No vendor patch available.
Heap-based buffer overflow in stream_decoder.c in libFLAC before 1.3.1 allows remote attackers to execute arbitrary code via a crafted .flac file. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, low attack complexity. Epss exploitation probability 25.7% and no vendor patch available.
Stack-based buffer overflow in stream_decoder.c in libFLAC before 1.3.1 allows remote attackers to execute arbitrary code via a crafted .flac file. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, low attack complexity. Epss exploitation probability 14.7% and no vendor patch available.
The pinger in Squid 3.x before 3.4.8 allows remote attackers to obtain sensitive information or cause a denial of service (out-of-bounds read and crash) via a crafted type in an (1) ICMP or (2) ICMP6. Rated medium severity (CVSS 6.4), this vulnerability is remotely exploitable, low attack complexity. Epss exploitation probability 77.3%.
Adobe Flash Player before 13.0.0.258 and 14.x and 15.x before 15.0.0.239 on Windows and OS X and before 11.2.202.424 on Linux, Adobe AIR before 15.0.0.293, Adobe AIR SDK before 15.0.0.302, and Adobe. Rated high severity (CVSS 8.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Actively exploited in the wild (cisa kev) and EPSS exploitation probability 27.1%.
Use-after-free vulnerability in decode_slice.cpp in Cisco OpenH264 1.2.0 and earlier allows remote attackers to execute arbitrary code via an encoded media file. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, low attack complexity. This Buffer Overflow vulnerability could allow attackers to corrupt memory to execute arbitrary code or crash the application.
Buffer overflow in decode.cpp in Cisco OpenH264 1.2.0 and earlier allows remote attackers to execute arbitrary code via an encoded media file. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, low attack complexity.
Buffer overflow in Cybozu Office 9 and 10 before 10.1.0, Mailwise 4 and 5 before 5.1.4, and Dezie 8 before 8.1.1 allows remote authenticated users to execute arbitrary code via e-mail messages. Rated critical severity (CVSS 9.0), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
Stack-based buffer overflow in the build_expert_data function in epan/dissectors/packet-ncp2222.inc in the NCP dissector in Wireshark 1.10.x before 1.10.11 and 1.12.x before 1.12.2 allows remote. Rated medium severity (CVSS 5.0), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
The decompress_sigcomp_message function in epan/sigcomp-udvm.c in the SigComp UDVM dissector in Wireshark 1.10.x before 1.10.11 allows remote attackers to cause a denial of service (buffer over-read. Rated medium severity (CVSS 5.0), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
Stack-based buffer overflow in the date_from_ISO8601 function in ext/xmlrpc/libxmlrpc/xmlrpc.c in PHP before 5.2.7 allows remote attackers to cause a denial of service (application crash) or possibly. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, low attack complexity. Public exploit code available and no vendor patch available.
Stack-based buffer overflow in Advantech WebAccess, formerly BroadWin WebAccess, before 8.0 allows remote attackers to execute arbitrary code via a crafted ip_address parameter in an HTML document. Rated high severity (CVSS 7.2), this vulnerability is low attack complexity. No vendor patch available.
tcpdump 3.8 through 4.6.2 might allow remote attackers to obtain sensitive information from memory or cause a denial of service (packet loss or segmentation fault) via a crafted Ad hoc On-Demand. Rated medium severity (CVSS 6.4), this vulnerability is remotely exploitable, low attack complexity. Public exploit code available and no vendor patch available.
Buffer overflow in Skia, as used in Google Chrome before 39.0.2171.65, allows remote attackers to cause a denial of service or possibly have unspecified other impact via unknown vectors. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
Buffer overflow in OpenJPEG before r2911 in PDFium, as used in Google Chrome before 39.0.2171.65, allows remote attackers to cause a denial of service or possibly have unspecified other impact via a. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
WebKit, as used in Apple iOS before 8.1.1 and Apple TV before 7.0.2, allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption and application crash) via a. Rated medium severity (CVSS 5.8), this vulnerability is low attack complexity. No vendor patch available.
WebKit, as used in Apple iOS before 8.1.1 and Apple TV before 7.0.2, allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption and application crash) via a. Rated medium severity (CVSS 5.4).
Multiple integer overflows in client/X11/xf_graphics.c in FreeRDP allow remote attackers to have an unspecified impact via the width and height to the (1) xf_Pointer_New or (2) xf_Bitmap_Decompress. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
Off-by-one error in the pci_read function in the ACPI PCI hotplug interface (hw/acpi/pcihp.c) in QEMU allows local guest users to obtain sensitive information and have other unspecified impact. Rated medium severity (CVSS 4.6), this vulnerability is low attack complexity.
Integer overflow in the getword function in options.c in pppd in Paul's PPP Package (ppp) before 2.4.7 allows attackers to "access privileged options" via a long word in an options file, which. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
Off-by-one error in the encodes function in pack.c in Ruby 1.9.3 and earlier, and 2.x through 2.1.2, when using certain format string specifiers, allows context-dependent attackers to cause a denial. Rated medium severity (CVSS 5.0), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
The curl_easy_duphandle function in libcurl 7.17.1 through 7.38.0, when running with the CURLOPT_COPYPOSTFIELDS option, does not properly copy HTTP POST data for an easy handle, which triggers an. Rated medium severity (CVSS 4.3), this vulnerability is remotely exploitable. No vendor patch available.
The _gnutls_ecc_ansi_x963_export function in gnutls_ecc.c in GnuTLS 3.x before 3.1.28, 3.2.x before 3.2.20, and 3.3.x before 3.3.10 allows remote attackers to cause a denial of service (out-of-bounds. Rated medium severity (CVSS 5.0), this vulnerability is remotely exploitable, low attack complexity.
Buffer overflow in login.cgi in MiniHttpd in Belkin N750 Router with firmware before F9K1103_WW_1.10.17m allows remote attackers to execute arbitrary code via a long string in the jump parameter. Rated critical severity (CVSS 10.0), this vulnerability is remotely exploitable, low attack complexity. Public exploit code available and EPSS exploitation probability 82.9%.
Adobe Flash Player before 13.0.0.252 and 14.x and 15.x before 15.0.0.223 on Windows and OS X and before 11.2.202.418 on Linux, Adobe AIR before 15.0.0.356, Adobe AIR SDK before 15.0.0.356, and Adobe. Rated critical severity (CVSS 10.0), this vulnerability is remotely exploitable, low attack complexity.
Adobe Flash Player before 13.0.0.252 and 14.x and 15.x before 15.0.0.223 on Windows and OS X and before 11.2.202.418 on Linux, Adobe AIR before 15.0.0.356, Adobe AIR SDK before 15.0.0.356, and Adobe. Rated critical severity (CVSS 10.0), this vulnerability is remotely exploitable, low attack complexity. Public exploit code available and EPSS exploitation probability 86.8%.
Heap-based buffer overflow in Adobe Flash Player before 13.0.0.252 and 14.x and 15.x before 15.0.0.223 on Windows and OS X and before 11.2.202.418 on Linux, Adobe AIR before 15.0.0.356, Adobe AIR SDK. Rated critical severity (CVSS 10.0), this vulnerability is remotely exploitable, low attack complexity.
Heap-based buffer overflow in Adobe Flash Player before 13.0.0.252 and 14.x and 15.x before 15.0.0.223 on Windows and OS X and before 11.2.202.418 on Linux, Adobe AIR before 15.0.0.356, Adobe AIR SDK. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, low attack complexity.
Heap-based buffer overflow in Adobe Flash Player before 13.0.0.252 and 14.x and 15.x before 15.0.0.223 on Windows and OS X and before 11.2.202.418 on Linux, Adobe AIR before 15.0.0.356, Adobe AIR SDK. Rated critical severity (CVSS 10.0), this vulnerability is remotely exploitable, low attack complexity. Epss exploitation probability 23.4%.
Adobe Flash Player before 13.0.0.252 and 14.x and 15.x before 15.0.0.223 on Windows and OS X and before 11.2.202.418 on Linux, Adobe AIR before 15.0.0.356, Adobe AIR SDK before 15.0.0.356, and Adobe. Rated critical severity (CVSS 10.0), this vulnerability is remotely exploitable, low attack complexity.
Adobe Flash Player before 13.0.0.252 and 14.x and 15.x before 15.0.0.223 on Windows and OS X and before 11.2.202.418 on Linux, Adobe AIR before 15.0.0.356, Adobe AIR SDK before 15.0.0.356, and Adobe. Rated critical severity (CVSS 10.0), this vulnerability is remotely exploitable, low attack complexity.
Microsoft Internet Explorer 6 through 10 allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via a crafted web site, aka "Internet Explorer Memory. Rated critical severity (CVSS 9.3), this vulnerability is remotely exploitable. Epss exploitation probability 24.1% and no vendor patch available.
Microsoft Internet Explorer 8 through 11 allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via a crafted web site, aka "Internet Explorer Memory. Rated critical severity (CVSS 9.3), this vulnerability is remotely exploitable. Epss exploitation probability 20.4% and no vendor patch available.
Microsoft Internet Explorer 9 allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via a crafted web site, aka "Internet Explorer Memory Corruption. Rated critical severity (CVSS 9.3), this vulnerability is remotely exploitable. Epss exploitation probability 19.6% and no vendor patch available.
Microsoft Internet Explorer 11 allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via a crafted web site, aka "Internet Explorer Memory Corruption. Rated critical severity (CVSS 9.3), this vulnerability is remotely exploitable. Epss exploitation probability 24.1% and no vendor patch available.
Microsoft Internet Explorer 8 and 9 allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via a crafted web site, aka "Internet Explorer Memory Corruption. Rated critical severity (CVSS 9.3), this vulnerability is remotely exploitable. Epss exploitation probability 24.1% and no vendor patch available.
Microsoft Internet Explorer 9 through 11 allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via a crafted web site, aka "Internet Explorer Memory. Rated critical severity (CVSS 9.3), this vulnerability is remotely exploitable. Epss exploitation probability 24.1% and no vendor patch available.
Microsoft Internet Explorer 9 allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via a crafted web site, aka "Internet Explorer Memory Corruption. Rated critical severity (CVSS 9.3), this vulnerability is remotely exploitable. Epss exploitation probability 24.1% and no vendor patch available.
Microsoft Internet Explorer 6 through 11 allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via a crafted web site, aka "Internet Explorer Memory. Rated critical severity (CVSS 9.3), this vulnerability is remotely exploitable. Epss exploitation probability 24.1% and no vendor patch available.
Microsoft Internet Explorer 10 and 11 allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via a crafted web site, aka "Internet Explorer Memory. Rated critical severity (CVSS 9.3), this vulnerability is remotely exploitable. Epss exploitation probability 24.1% and no vendor patch available.
Microsoft Word 2007 SP3, Word Viewer, and Office Compatibility Pack SP3 allow remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via a crafted Office. Rated critical severity (CVSS 9.3), this vulnerability is remotely exploitable. Epss exploitation probability 46.0% and no vendor patch available.
Microsoft Word 2007 SP3, Word Viewer, and Office Compatibility Pack SP3 allow remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via a crafted Office. Rated critical severity (CVSS 9.3), this vulnerability is remotely exploitable. Epss exploitation probability 46.0% and no vendor patch available.
OleAut32.dll in OLE in Microsoft Windows Server 2003 SP2, Windows Vista SP2, Windows Server 2008 SP2 and R2 SP1, Windows 7 SP1, Windows 8, Windows 8.1, Windows Server 2012 Gold and R2, and Windows RT. Rated high severity (CVSS 8.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Actively exploited in the wild (cisa kev) and public exploit code available.
Microsoft Internet Explorer 6 through 11 allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via a crafted web site, aka "Internet Explorer Memory. Rated critical severity (CVSS 9.3), this vulnerability is remotely exploitable. Epss exploitation probability 33.3% and no vendor patch available.
The kvm_iommu_map_pages function in virt/kvm/iommu.c in the Linux kernel through 3.17.2 miscalculates the number of pages during the handling of a mapping failure, which allows guest OS users to. Rated high severity (CVSS 7.8), this vulnerability is low attack complexity. Public exploit code available.
kernel/trace/trace_syscalls.c in the Linux kernel through 3.17.2 does not properly handle private syscall numbers during use of the perf subsystem, which allows local users to cause a denial of. Rated high severity (CVSS 7.8), this vulnerability is low attack complexity. Public exploit code available.
The blowfishECB function in core/cipher.cpp in Quassel IRC 0.10.0 allows remote attackers to cause a denial of service (out-of-bounds read) via a malformed string. Rated medium severity (CVSS 5.0), this vulnerability is remotely exploitable, low attack complexity.
Off-by-one error in libavcodec/smc.c in FFmpeg before 2.4.2 allows remote attackers to cause a denial of service (out-of-bounds access) or possibly have unspecified other impact via crafted Quicktime. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
libavcodec/gifdec.c in FFmpeg before 2.4.2 does not properly compute image heights, which allows remote attackers to cause a denial of service (out-of-bounds access) or possibly have unspecified. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
libavcodec/utils.c in FFmpeg before 2.4.2 omits a certain codec ID during enforcement of alignment, which allows remote attackers to cause a denial of service (out-of-bounds access) or possibly have. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
libavcodec/mjpegdec.c in FFmpeg before 2.4.2 considers only dimension differences, and not bits-per-pixel differences, when determining whether an image size has changed, which allows remote. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
The donote function in readelf.c in file through 5.20, as used in the Fileinfo component in PHP 5.4.34, does not ensure that sufficient note headers are present, which allows remote attackers to. Rated medium severity (CVSS 5.0), this vulnerability is remotely exploitable, low attack complexity.
hw/usb/bus.c in QEMU 1.6.2 allows remote attackers to execute arbitrary code via crafted savevm data, which triggers a heap-based buffer overflow, related to "USB post load checks.". Rated medium severity (CVSS 6.8), this vulnerability is remotely exploitable. No vendor patch available.
Integer overflow in the qcow_open function in block/qcow.c in QEMU before 1.7.2 allows local users to cause a denial of service (crash) and possibly execute arbitrary code via a large image size,. Rated medium severity (CVSS 4.6), this vulnerability is low attack complexity. Public exploit code available.
Heap-based buffer overflow in the virtio_load function in hw/virtio/virtio.c in QEMU before 1.7.2 might allow remote attackers to execute arbitrary code via a crafted config length in a savevm image. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, low attack complexity.
The virtio_scsi_load_request function in hw/scsi/scsi-bus.c in QEMU before 1.7.2 might allow remote attackers to execute arbitrary code via a crafted savevm image, which triggers an out-of-bounds. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, low attack complexity. This Buffer Overflow vulnerability could allow attackers to corrupt memory to execute arbitrary code or crash the application.
The usb_device_post_load function in hw/usb/bus.c in QEMU before 1.7.2 might allow remote attackers to execute arbitrary code via a crafted savevm image, related to a negative setup_len or. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, low attack complexity. This Buffer Overflow vulnerability could allow attackers to corrupt memory to execute arbitrary code or crash the application.
Buffer overflow in scoop_gpio_handler_update in QEMU before 1.7.2 might allow remote attackers to execute arbitrary code via a large (1) prev_level, (2) gpio_level, or (3) gpio_dir value in a savevm. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, low attack complexity.
Multiple buffer overflows in the tsc210x_load function in hw/input/tsc210x.c in QEMU before 1.7.2 might allow remote attackers to execute arbitrary code via a crafted (1) precision, (2). Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, low attack complexity.
Multiple buffer overflows in the ssd0323_load function in hw/display/ssd0323.c in QEMU before 1.7.2 allow remote attackers to cause a denial of service (memory corruption) or possibly execute. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, low attack complexity.
Buffer overflow in hw/intc/openpic.c in QEMU before 1.7.2 allows remote attackers to cause a denial of service or possibly execute arbitrary code via vectors related to IRQDest elements. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, low attack complexity.
Buffer overflow in the pxa2xx_ssp_load function in hw/arm/pxa2xx.c in QEMU before 1.7.2 allows remote attackers to cause a denial of service or possibly execute arbitrary code via a crafted. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, low attack complexity.
Buffer overflow in target-arm/machine.c in QEMU before 1.7.2 allows remote attackers to cause a denial of service and possibly execute arbitrary code via a negative value in cpreg_vmstate_array_len. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, low attack complexity.
Buffer overflow in hw/ssi/pl022.c in QEMU before 1.7.2 allows remote attackers to cause a denial of service or possibly execute arbitrary code via crafted tx_fifo_head and rx_fifo_head values in a. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, low attack complexity.
Buffer overflow in hw/pci/pcie_aer.c in QEMU before 1.7.2 allows remote attackers to cause a denial of service and possibly execute arbitrary code via a large log_num value in a savevm image. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, low attack complexity.
Buffer overflow in hw/timer/hpet.c in QEMU before 1.7.2 might allow remote attackers to execute arbitrary code via vectors related to the number of timers. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, low attack complexity.
Buffer overflow in hw/ide/ahci.c in QEMU before 1.7.2 allows remote attackers to cause a denial of service and possibly execute arbitrary code via vectors related to migrating ports. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, low attack complexity.
The virtio_load function in virtio/virtio.c in QEMU 1.x before 1.7.2 allows remote attackers to execute arbitrary code via a crafted savevm image, which triggers an out-of-bounds write. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, low attack complexity. This Code Injection vulnerability could allow attackers to inject and execute arbitrary code within the application.
The virtio_net_load function in hw/net/virtio-net.c in QEMU 1.5.0 through 1.7.x before 1.7.2 allows remote attackers to cause a denial of service or possibly execute arbitrary code via vectors in. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, low attack complexity. This Buffer Overflow vulnerability could allow attackers to corrupt memory to execute arbitrary code or crash the application.
Buffer overflow in virtio_net_load function in net/virtio-net.c in QEMU 1.3.0 through 1.7.x before 1.7.2 might allow remote attackers to execute arbitrary code via a large MAC table. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, low attack complexity.
Integer signedness error in the virtio_net_load function in hw/net/virtio-net.c in QEMU 1.x before 1.7.2 allows remote attackers to execute arbitrary code via a crafted savevm image, which triggers a. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, low attack complexity.
libavcodec/iff.c in FFMpeg before 1.1.14, 1.2.x before 1.2.8, 2.2.x before 2.2.7, and 2.3.x before 2.3.2 allows remote attackers to have unspecified impact via a crafted iff image, which triggers an. Rated medium severity (CVSS 6.8), this vulnerability is remotely exploitable. No vendor patch available.
Heap-based buffer overflow in the encode_slice function in libavcodec/proresenc_kostya.c in FFMpeg before 1.1.14, 1.2.x before 1.2.8, 2.x before 2.2.7, and 2.3.x before 2.3.3 and Libav before 10.5. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, low attack complexity. Epss exploitation probability 17.2% and no vendor patch available.
rsyslog before 7.6.6 and 8.x before 8.4.1 and sysklogd 1.5 and earlier allows remote attackers to cause a denial of service (crash), possibly execute arbitrary code, or have other unspecified impact. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, low attack complexity. Public exploit code available and EPSS exploitation probability 29.4%.
Stack-based buffer overflow in the normify function in the rlm_pap module (modules/rlm_pap/rlm_pap.c) in FreeRADIUS 2.x, possibly 2.2.3 and earlier, and 3.x, possibly 3.0.1 and earlier, might allow. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, low attack complexity. Public exploit code available.
The lazy_bdecode function in BitTorrent bootstrap-dht (aka Bootstrap) allows remote attackers to execute arbitrary code via a crafted packet, which triggers an out-of-bounds read, related to. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, low attack complexity. Public exploit code available.
Buffer overflow in ALLPlayer 5.6.2 through 5.8.1 allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via a long string in a .m3u (playlist) file. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, low attack complexity. Public exploit code available and EPSS exploitation probability 82.1%.
nmevent.c in the Novell GroupWise protocol plugin in libpurple in Pidgin before 2.10.10 allows remote servers to cause a denial of service (application crash) via a crafted server message that. Rated medium severity (CVSS 5.0), this vulnerability is remotely exploitable, low attack complexity. This Buffer Overflow vulnerability could allow attackers to corrupt memory to execute arbitrary code or crash the application.
markup.c in the MXit protocol plugin in libpurple in Pidgin before 2.10.10 allows remote servers to cause a denial of service (application crash) via a large length value in an emoticon response. Rated medium severity (CVSS 5.0), this vulnerability is remotely exploitable, low attack complexity. This Buffer Overflow vulnerability could allow attackers to corrupt memory to execute arbitrary code or crash the application.
The exif_ifd_make_value function in exif.c in the EXIF extension in PHP before 5.4.34, 5.5.x before 5.5.18, and 5.6.x before 5.6.2 operates on floating-point arrays incorrectly, which allows remote. Rated medium severity (CVSS 6.8), this vulnerability is remotely exploitable. Public exploit code available and EPSS exploitation probability 35.1%.
Buffer overflow in the date_from_ISO8601 function in the mkgmtime implementation in libxmlrpc/xmlrpc.c in the XMLRPC extension in PHP before 5.4.34, 5.5.x before 5.5.18, and 5.6.x before 5.6.2 allows. Rated medium severity (CVSS 5.0), this vulnerability is remotely exploitable, low attack complexity. Public exploit code available and no vendor patch available.
Stack-based buffer overflow in rtsold in FreeBSD 9.1 through 10.1-RC2 allows remote attackers to cause a denial of service (crash) or possibly execute arbitrary code via crafted DNS parameters in a. Rated critical severity (CVSS 10.0), this vulnerability is remotely exploitable, low attack complexity.
Xen 4.4.x, when running on an ARM system and "handling an unknown system register access from 64-bit userspace," returns to an instruction of the trap handler for kernel space faults instead of an. Rated medium severity (CVSS 4.6), this vulnerability is low attack complexity. This Buffer Overflow vulnerability could allow attackers to corrupt memory to execute arbitrary code or crash the application.
Stack-based buffer overflow in CPUMiner before 2.4.1 allows remote attackers to have an unspecified impact by sending a mining.subscribe response with a large nonce2 length, then triggering the. Rated medium severity (CVSS 6.0), this vulnerability is remotely exploitable. No vendor patch available.
Unspecified vulnerability in Shim might allow attackers to execute arbitrary code via a crafted MOK list, which triggers memory corruption. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, low attack complexity.