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Back to active CVEs
Medium · CVSS 5.5CVE-2026-49425

Kernel stack disclosure in 32-bit compatibility support

Answer in brief

CVE-2026-49425 records a Medium severity (CVSS 5.5) vulnerability in Kernel stack disclosure in 32-bit compatibility support. The current sources do not mark it as known exploited. The current feed maps FreeBSD/FreeBSD (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Aug 19, 2026Updated Aug 31, 2026Source checked Oct 3, 2026First seen by HOL Aug 19, 2026Material review Aug 31, 2026
Upstream Advisory

Key facts

Risk
Medium · CVSS 5.5
Exploitation
Not marked as known exploited
Affected software
36 mapped packages or products
Fix availability
Available

Why this deserves its current priority

CVSS is 5.5. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps FreeBSD/FreeBSD (generic). Check affected ranges and fixed versions before updating.

Affected products and reported versions
ProductAffected versionsFixed versions
cpe:2.3:o:freebsd:freebsd:14.3:-:*:*:*:*:*:*Not reportedNot reported
cpe:2.3:o:freebsd:freebsd:14.3:p1:*:*:*:*:*:*Not reportedNot reported
cpe:2.3:o:freebsd:freebsd:14.3:p10:*:*:*:*:*:*Not reportedNot reported
cpe:2.3:o:freebsd:freebsd:14.3:p11:*:*:*:*:*:*Not reportedNot reported
cpe:2.3:o:freebsd:freebsd:14.3:p12:*:*:*:*:*:*Not reportedNot reported
cpe:2.3:o:freebsd:freebsd:14.3:p13:*:*:*:*:*:*Not reportedNot reported
cpe:2.3:o:freebsd:freebsd:14.3:p14:*:*:*:*:*:*Not reportedNot reported
cpe:2.3:o:freebsd:freebsd:14.3:p15:*:*:*:*:*:*Not reportedNot reported
cpe:2.3:o:freebsd:freebsd:14.3:p2:*:*:*:*:*:*Not reportedNot reported
cpe:2.3:o:freebsd:freebsd:14.3:p3:*:*:*:*:*:*Not reportedNot reported
cpe:2.3:o:freebsd:freebsd:14.3:p4:*:*:*:*:*:*Not reportedNot reported
cpe:2.3:o:freebsd:freebsd:14.3:p5:*:*:*:*:*:*Not reportedNot reported
cpe:2.3:o:freebsd:freebsd:14.3:p6:*:*:*:*:*:*Not reportedNot reported
cpe:2.3:o:freebsd:freebsd:14.3:p7:*:*:*:*:*:*Not reportedNot reported
cpe:2.3:o:freebsd:freebsd:14.3:p8:*:*:*:*:*:*Not reportedNot reported
cpe:2.3:o:freebsd:freebsd:14.3:p9:*:*:*:*:*:*Not reportedNot reported
cpe:2.3:o:freebsd:freebsd:14.4:-:*:*:*:*:*:*Not reportedNot reported
cpe:2.3:o:freebsd:freebsd:14.4:p1:*:*:*:*:*:*Not reportedNot reported
cpe:2.3:o:freebsd:freebsd:14.4:p2:*:*:*:*:*:*Not reportedNot reported
cpe:2.3:o:freebsd:freebsd:14.4:p3:*:*:*:*:*:*Not reportedNot reported
cpe:2.3:o:freebsd:freebsd:14.4:p4:*:*:*:*:*:*Not reportedNot reported
cpe:2.3:o:freebsd:freebsd:14.4:p5:*:*:*:*:*:*Not reportedNot reported
cpe:2.3:o:freebsd:freebsd:14.4:p6:*:*:*:*:*:*Not reportedNot reported
cpe:2.3:o:freebsd:freebsd:14.4:rc1:*:*:*:*:*:*Not reportedNot reported
cpe:2.3:o:freebsd:freebsd:15.0:-:*:*:*:*:*:*Not reportedNot reported
cpe:2.3:o:freebsd:freebsd:15.0:p1:*:*:*:*:*:*Not reportedNot reported
cpe:2.3:o:freebsd:freebsd:15.0:p10:*:*:*:*:*:*Not reportedNot reported
cpe:2.3:o:freebsd:freebsd:15.0:p2:*:*:*:*:*:*Not reportedNot reported
cpe:2.3:o:freebsd:freebsd:15.0:p3:*:*:*:*:*:*Not reportedNot reported
cpe:2.3:o:freebsd:freebsd:15.0:p4:*:*:*:*:*:*Not reportedNot reported
cpe:2.3:o:freebsd:freebsd:15.0:p5:*:*:*:*:*:*Not reportedNot reported
cpe:2.3:o:freebsd:freebsd:15.0:p6:*:*:*:*:*:*Not reportedNot reported
cpe:2.3:o:freebsd:freebsd:15.0:p7:*:*:*:*:*:*Not reportedNot reported
cpe:2.3:o:freebsd:freebsd:15.0:p8:*:*:*:*:*:*Not reportedNot reported
cpe:2.3:o:freebsd:freebsd:15.0:p9:*:*:*:*:*:*Not reportedNot reported
Mapped affected packages and fixed versions
PackageAffected rangeFixed version
FreeBSD/FreeBSDgeneric>=15.0-RELEASE <p11 || >=14.4-RELEASE <p7 || >=14.3-RELEASE <p16p11, p7, p16

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for FreeBSD/FreeBSD.
  2. 2Review the reported fix. Update FreeBSD/FreeBSD to p11 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

  1. Published upstream

    Aug 19, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Aug 31, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Aug 19, 2026

Sources and claim methodology

  • Source referencesecurity.freebsd.org
Upstream source description

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.

Quoted source text, attributed separately from HOL analysis.

Related CVEs

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  • WP Ultimate Review < 2.4.4 - Author+ Stored XSS via Review Overview SettingsSame generic ecosystem
  • MPG < 4.2.3 - Editor+ Arbitrary File Read via Project ImportSame generic ecosystem
  • WPMobile.App <= 11.84 - Unauthenticated Stored Cross-Site Scripting via '/android_json/search/<value>/0' Path SegmentSame generic ecosystem
  • WP 2FA < 4.1.0 - Two-Factor Authentication Bypass via TOTP Code ReplaySame generic ecosystem
  • WP Ultimate Review <= 2.4.3 - Authenticated (Subscriber+) Arbitrary Shortcode Execution via 'xs_reviw_summery' ParameterSame generic ecosystem

Record context

Vulnerability class
Vulnerability
EPSS
Not reported
CWE IDs
CWE-908
Source
CVE List V5
Source checked
Oct 3, 2026
References
1 linked source
Open source record