CVE-2026-8092
8.1 HIGHMemory safety bugs present in Firefox ESR 115.35.1, Firefox ESR 140.10.1 and Firefox 150.0.1
Published: 2026-05-07 · Last updated: 2026-05-18
Severity and scoring
- CVSS
- 8.1 HIGH
- Vector
- CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
- CWE
- CWE-125, CWE-416, CWE-787
Affected products
| Vendor | Product |
|---|---|
| mozilla | firefox, thunderbird |
Description
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.
Source: NVD
References
- [NVD]https://nvd.nist.gov/vuln/detail/CVE-2026-8092
- [Other]https://bugzilla.mozilla.org/buglist.cgi?bug_id=1806249%2C2021977%2C2022576%2C2022722%2C2024439%2C2027883%2C2029463%2C2030323%2C2032042%2C2032043%2C2033270%2C2033637%2C2034422%2C2034496%2C2035879%2C2036516
- [Vendor advisory]https://www.mozilla.org/security/advisories/mfsa2026-40/
- [Vendor advisory]https://www.mozilla.org/security/advisories/mfsa2026-41/
- [Vendor advisory]https://www.mozilla.org/security/advisories/mfsa2026-42/
- [Vendor advisory]https://www.mozilla.org/security/advisories/mfsa2026-43/
- [Vendor advisory]https://www.mozilla.org/security/advisories/mfsa2026-44/
Related CVEs
Same vendor
- CVE-2026-12330 — Incorrect boundary conditions in the Internationalization component (5.4 MEDIUM)
- CVE-2026-12329 — Memory safety bug fixed in Thunderbird ESR 140.12 (5.3 MEDIUM)
- CVE-2026-12328 — Memory safety bugs present in Firefox ESR 115.36, Firefox ESR 140.11, Thunderbird ESR 140.11, Firefox 151 and Thunderbird 151 (8.1 HIGH)
- CVE-2026-12323 — Spoofing issue in the DOM: Core & HTML component (5.4 MEDIUM)
- CVE-2026-12322 — Clickjacking issue in the Widget: Gtk component (5.4 MEDIUM)
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