EUVD-2026-62346
GHSA-jjwm-g4j5-q96v
Severity by source
AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Local access and an unprivileged account are required (AV:L, PR:L); only confidentiality is impacted since no write capability or crash condition exists.
Primary rating from Vendor (freebsd).
CVSS VectorVendor: freebsd
Lifecycle Timeline
3DescriptionCVE.org
The compat32 kevent() handler translates a 64-bit kevent struct into a stack- declared 32-bit struct. It did not first zero the stack struct.
An unprivileged user may observe a small amount of uninitialized kernel stack data, which may contain sensitive information.
AnalysisAI
Uninitialized kernel stack memory disclosure in FreeBSD's compat32 kevent() handler allows local unprivileged users to read small amounts of sensitive kernel stack data. Affected releases span FreeBSD 15.0-RELEASE before p11, 14.4-RELEASE before p7, and 14.3-RELEASE before p16, covering systems where 32-bit application compatibility is enabled. …
Unlock full vulnerability intelligence
- Risk assessment & exploitation conditions
- Attack chain visualization
- Remediation with exact patch versions
- Threat intelligence from 22 sources
- Personal watchlist & email alerts
Free forever · No credit card required
Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires a local unprivileged account (any standard user, no sudo or special group membership needed) on a 64-bit FreeBSD system where compat32 support is active - the default configuration on amd64 installations. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 3.1 score of 5.5 (Medium) with vector AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N accurately reflects a local, low-privilege, no-user-interaction exploit path. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | Apply the official FreeBSD security patches to reach FreeBSD 15.0-RELEASE-p11, 14.4-RELEASE-p7, or 14.3-RELEASE-p16 as appropriate, following the instructions in FreeBSD Security Advisory SA-26:48 at https://security.freebsd.org/advisories/FreeBSD-SA-26:48.compat32.asc. … Detailed patch versions, workarounds, and compensating controls in full report. |
Threat intelligence, references, and detailed analysis are available after sign-in.
The x86-64 kernel system-call functionality in Xen 4.1.2 and earlier, as used in Citrix XenServer 6.0.2 and earlier and
The rtsol(8) and rtsold(8) programs do not validate the domain search list options provided in router advertisement mess
The RFC 5011 implementation in rdata.c in ISC BIND 9.7.x and 9.8.x before 9.8.5-P2, 9.8.6b1, 9.9.x before 9.9.3-P2, and
Remote code execution in OpenSSH's sshd server (regression of CVE-2006-5051) allows unauthenticated remote attackers to
The SSH transport protocol with certain OpenSSH extensions, found in OpenSSH before 9.6 and other products, allows remot
The vm_map_lookup function in sys/vm/vm_map.c in the mmap implementation in the kernel in FreeBSD 9.0 through 9.1-RELEAS
Integer overflow in the _gd2GetHeader function in gd_gd2.c in the GD Graphics Library (aka libgd) before 2.2.3, as used
The Stream Control Transmission Protocol (SCTP) module in FreeBSD 9.3 before p33, 10.1 before p26, and 10.2 before p9, w
In FreeBSD 12.1-STABLE before r359565, 12.1-RELEASE before p7, 11.4-STABLE before r362975, 11.4-RELEASE before p1, and 1
A statement in the System Programming Guide of the Intel 64 and IA-32 Architectures Software Developer's Manual (SDM) wa
The SCTP implementation in FreeBSD 8.2 allows remote attackers to cause a denial of service (NULL pointer dereference an
NFS in a BSD derived codebase, as used in OpenBSD through 7.4 and FreeBSD through 14.0-RELEASE, allows remote attackers
Same weakness CWE-908 – Use of Uninitialized Resource
View allSame technique Information Disclosure
View allShare
External POC / Exploit Code
Leaving vuln.today