CVE-2026-12326

INFO Priority: 0.00 BB Relevance: 0/100

Published: 2026-06-16 Modified: 2026-10-26 First seen: 2026-10-29 Status: pending_score

Description

Memory safety bugs present in Firefox 151 and Thunderbird 151. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability was fixed in Firefox 152 and Thunderbird 152.

Weakness Classification (2)

CWE-119 CWE-825

Affected Software (2)

Vendor	Product	Version
mozilla	firefox	< 152.0.0
mozilla	thunderbird	< 152.0.0

References & Advisories (8)

https://www.mozilla.org/security/advisories/mfsa2026-57/

Vendor Advisory

https://www.mozilla.org/security/advisories/mfsa2026-60/

Vendor Advisory

https://bugzilla.mozilla.org/buglist.cgi?bug_id=1767455%2C2004308%2C2024445%2C2028182%2C2029765%2C2029883%2C2030110%2C2030149%2C2030366%2C2030374%2C2030564%2C2031120%2C2033411%2C2038695%2C2042465%2C2042781%2C2042907

Broken Link

https://bugzilla.mozilla.org/buglist.cgi?bug_id=2021955%2C2025960%2C2029066%2C2029403%2C2029435%2C2029803%2C2030570%2C2030573%2C2032264%2C2033234%2C2034816%2C2035907%2C2035963%2C2036895%2C2036898%2C2036907%2C2036909%2C2036928%2C2036931%2C2036932%2C2036934%2C2039238%2C2039463

Broken Link

https://bugzilla.mozilla.org/buglist.cgi?bug_id=2039050%2C2042718%2C2042760%2C2044831%2C2045307%2C2045398%2C2045516%2C2045572%2C2041741%2C2044433

Broken Link

https://access.redhat.com/security/cve/CVE-2026-12326

https://bugzilla.redhat.com/show_bug.cgi?id=2489222

https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-12326.json

Bug Bounty Relevance

0 / 100

CVSS Score

Unscored

EPSS — Exploitation Probability

0.36%

Raw Score 0.003630

Percentile 30.0%

Date 2026-10-29

EPSS Trend

2026-10-29

0.00363

2026-10-28

0.00363

Intelligence Sources

nvd ref →

External Links

NVD (NIST) CVE Details FIRST EPSS API OSV.dev