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CWE-170

Improper Null Termination

7 CVEs Avg CVSS 4.9 MITRE
1
CRITICAL
0
HIGH
3
MEDIUM
3
LOW
1
POC
0
KEV

Monthly

CVE-2026-8721 CRITICAL Act Now

Silent password truncation in the Perl module Crypt::OpenSSL::PKCS12 versions up to and including 1.94 causes any password bytes at or after the first embedded NULL byte to be dropped without warning. The flaw stems from password parameters being declared as char* in PKCS12.xs, routing through Perl's default typemap to SvPV_nolen and discarding the Perl-known length before C strlen() truncates the buffer. The result is severe entropy loss for binary, KDF-derived, or HMAC-derived passwords used to protect PKCS12 keystores, with no public exploit identified at time of analysis.

Information Disclosure OpenSSL
NVD VulDB
CVSS 3.1
9.8
EPSS
0.0%
CVE-2026-34032 MEDIUM PATCH This Month

Improper null termination and out-of-bounds read vulnerability in Apache HTTP Server through version 2.4.66 allows remote unauthenticated attackers to trigger information disclosure with low complexity exploitation. The vulnerability has a CVSS score of 5.3 (medium) with network-accessible attack vector and no user interaction required, though technical impact is limited to confidentiality (partial information disclosure). Vendor-released patch: version 2.4.67 addresses the issue.

Buffer Overflow Apache Red Hat Suse
NVD VulDB
CVSS 3.1
5.3
EPSS
0.1%
CVE-2026-40334 LOW Monitor

Missing null terminator in libgphoto2's ptp_unpack_Canon_FE() function allows out-of-bounds memory reads when processing Canon camera filenames. Versions up to 2.5.33 are vulnerable when a 13-byte filename without null termination is supplied, causing subsequent string operations to read beyond buffer boundaries. The vulnerability requires physical camera access and results in information disclosure or denial of service, not remote code execution.

Buffer Overflow
NVD GitHub VulDB
CVSS 3.1
3.5
EPSS
0.0%
CVE-2026-2239 LOW PATCH Monitor

GIMP's PSD file parser crashes when processing specially crafted Photoshop documents due to improper null-termination in the fread_pascal_string function, allowing local authenticated users to trigger a denial of service. The vulnerability affects GIMP across Red Hat Enterprise Linux 7, 8, and 9, as well as multiple Debian and Ubuntu releases tracked by their respective security teams. While the CVSS score is low (2.8), the widespread distribution across major Linux vendors and confirmed advisory issuance from Red Hat, Debian, and SUSE indicates this merits coordinated patching despite limited exploitability constraints.

Buffer Overflow Denial Of Service
NVD
CVSS 3.1
2.8
EPSS
0.0%
CVE-2026-32837 MEDIUM PATCH This Month

Miniaudio versions 0.11.25 and earlier are vulnerable to a heap out-of-bounds read in the WAV BEXT metadata parser when processing specially crafted WAV files. An attacker can exploit improper null-termination handling in the coding history field to trigger memory access violations, causing application crashes or denial of service. No patch is currently available for affected Debian and Miniaudio distributions.

Buffer Overflow Denial Of Service
NVD GitHub VulDB
CVSS 4.0
5.1
EPSS
0.0%
CVE-2026-23749 LOW Monitor

Golioth Firmware SDK version 0.19.1 prior to 0.22.0, fixed in commit 0e788217, contain an out-of-bounds read due to improper null termination of a blockwise transfer path. blockwise_transfer_init() accepts a path whose length equals CONFIG_GOLIOTH_COAP_MAX_PATH_LEN and copies it using strncpy() without guaranteeing a trailing NUL byte, leaving ctx->path unterminated. A later strlen() on this bu...

Denial Of Service
NVD GitHub
CVSS 3.1
2.9
EPSS
0.0%
CVE-2025-66220 Go MEDIUM POC PATCH This Month

Envoy is a high-performance edge/middle/service proxy. In 1.33.12, 1.34.10, 1.35.6, 1.36.2, and earlier, Envoy’s mTLS certificate matcher for match_typed_subject_alt_names may incorrectly treat certificates containing an embedded null byte (\0) inside an OTHERNAME SAN value as valid matches.

Information Disclosure Debian Red Hat Envoy
NVD GitHub
CVSS 3.1
5.0
EPSS
0.0%
EPSS 0% CVSS 9.8
CRITICAL Act Now

Silent password truncation in the Perl module Crypt::OpenSSL::PKCS12 versions up to and including 1.94 causes any password bytes at or after the first embedded NULL byte to be dropped without warning. The flaw stems from password parameters being declared as char* in PKCS12.xs, routing through Perl's default typemap to SvPV_nolen and discarding the Perl-known length before C strlen() truncates the buffer. The result is severe entropy loss for binary, KDF-derived, or HMAC-derived passwords used to protect PKCS12 keystores, with no public exploit identified at time of analysis.

Information Disclosure OpenSSL
NVD VulDB
EPSS 0% CVSS 5.3
MEDIUM PATCH This Month

Improper null termination and out-of-bounds read vulnerability in Apache HTTP Server through version 2.4.66 allows remote unauthenticated attackers to trigger information disclosure with low complexity exploitation. The vulnerability has a CVSS score of 5.3 (medium) with network-accessible attack vector and no user interaction required, though technical impact is limited to confidentiality (partial information disclosure). Vendor-released patch: version 2.4.67 addresses the issue.

Buffer Overflow Apache Red Hat +1
NVD VulDB
EPSS 0% CVSS 3.5
LOW Monitor

Missing null terminator in libgphoto2's ptp_unpack_Canon_FE() function allows out-of-bounds memory reads when processing Canon camera filenames. Versions up to 2.5.33 are vulnerable when a 13-byte filename without null termination is supplied, causing subsequent string operations to read beyond buffer boundaries. The vulnerability requires physical camera access and results in information disclosure or denial of service, not remote code execution.

Buffer Overflow
NVD GitHub VulDB
EPSS 0% CVSS 2.8
LOW PATCH Monitor

GIMP's PSD file parser crashes when processing specially crafted Photoshop documents due to improper null-termination in the fread_pascal_string function, allowing local authenticated users to trigger a denial of service. The vulnerability affects GIMP across Red Hat Enterprise Linux 7, 8, and 9, as well as multiple Debian and Ubuntu releases tracked by their respective security teams. While the CVSS score is low (2.8), the widespread distribution across major Linux vendors and confirmed advisory issuance from Red Hat, Debian, and SUSE indicates this merits coordinated patching despite limited exploitability constraints.

Buffer Overflow Denial Of Service
NVD
EPSS 0% CVSS 5.1
MEDIUM PATCH This Month

Miniaudio versions 0.11.25 and earlier are vulnerable to a heap out-of-bounds read in the WAV BEXT metadata parser when processing specially crafted WAV files. An attacker can exploit improper null-termination handling in the coding history field to trigger memory access violations, causing application crashes or denial of service. No patch is currently available for affected Debian and Miniaudio distributions.

Buffer Overflow Denial Of Service
NVD GitHub VulDB
EPSS 0% CVSS 2.9
LOW Monitor

Golioth Firmware SDK version 0.19.1 prior to 0.22.0, fixed in commit 0e788217, contain an out-of-bounds read due to improper null termination of a blockwise transfer path. blockwise_transfer_init() accepts a path whose length equals CONFIG_GOLIOTH_COAP_MAX_PATH_LEN and copies it using strncpy() without guaranteeing a trailing NUL byte, leaving ctx->path unterminated. A later strlen() on this bu...

Denial Of Service
NVD GitHub
EPSS 0% CVSS 5.0
MEDIUM POC PATCH This Month

Envoy is a high-performance edge/middle/service proxy. In 1.33.12, 1.34.10, 1.35.6, 1.36.2, and earlier, Envoy’s mTLS certificate matcher for match_typed_subject_alt_names may incorrectly treat certificates containing an embedded null byte (\0) inside an OTHERNAME SAN value as valid matches.

Information Disclosure Debian Red Hat +1
NVD GitHub

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