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CVE-2026-8092

33
FAUCET Score

Memory safety bugs present in Firefox ESR 115.35.1, Firefox ESR 140.10.1 and Firefox 150.0.1. 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 150.0.2, Firefox ESR 140.10.2, Firefox ESR 115.35.2, Thunderbird 150.0.2, and Thunderbird 140.10.2.

First published: May 7, 2026Last modified: May 18, 2026

Impacted Technologies

VendorProductVersion(s)CPE
< 115.35.2CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:*:*:*:*:esr:*:*:*
>= 140.0, < 140.10.2CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:*:*:*:*:esr:*:*:*
>= 150.0, < 150.0.2CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:*:*:*:*:-:*:*:*
>= 140.0, < 140.10.2CPE matchmatch criteria
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:-:*:*:*
>= 150.0, < 150.0.2CPE matchmatch criteria
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:-:*:*:*

CVSS Data

CVSS version used by this source: 3.1

8.1HIGH

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.2
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.38%
Probability of exploitation in next 30 days
EPSS Percentile
31.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0038 is in the 7th percentile among its peer group of 8,920 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Patches (1)

mozillavendor investigatingvia nvd_reference
View patch

References

access.redhat.com / errata/RHSA-2026:19160
access.redhat.com / errata/RHSA-2026:20566
access.redhat.com / errata/RHSA-2026:20574
access.redhat.com / errata/RHSA-2026:21381
access.redhat.com / errata/RHSA-2026:22325
access.redhat.com / errata/RHSA-2026:22643
access.redhat.com / errata/RHSA-2026:24508
access.redhat.com / errata/RHSA-2026:24509
access.redhat.com / errata/RHSA-2026:24510
access.redhat.com / errata/RHSA-2026:24511
access.redhat.com / errata/RHSA-2026:24516
access.redhat.com / errata/RHSA-2026:24755
access.redhat.com / errata/RHSA-2026:24983
access.redhat.com / errata/RHSA-2026:25015
access.redhat.com / errata/RHSA-2026:26174
access.redhat.com / errata/RHSA-2026:26268
access.redhat.com / errata/RHSA-2026:26269
access.redhat.com / errata/RHSA-2026:26270
access.redhat.com / errata/RHSA-2026:26521
access.redhat.com / errata/RHSA-2026:26536
access.redhat.com / errata/RHSA-2026:26539
access.redhat.com / security/cve/CVE-2026-8092
bugzilla.redhat.com / show_bug.cgi
security.access.redhat.com / data/csaf/v2/vex/2026/cve-2026-8092.json
bugzilla.mozilla.org / buglist.cgi
Broken Link
mozilla.org / security/advisories/mfsa2026-40
Vendor Advisory
mozilla.org / security/advisories/mfsa2026-41
Vendor Advisory
mozilla.org / security/advisories/mfsa2026-42
Vendor Advisory
mozilla.org / security/advisories/mfsa2026-43
Vendor Advisory
mozilla.org / security/advisories/mfsa2026-44
Vendor Advisory