CVEvulnerability
CVE-2026-6784
7.5 HIGH
Official page ↗
- Status
- Modified
- Published
- 2026-04-21
- Last modified
- 2026-10-26
- Assigner
- [email protected]
- CVSS 3.1 (134c704f-9b21-4f2e-91b3-4a467353bcc0)
- 7.5 HIGH — CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
- CVSS 3.1 (0b0ca135-0b70-47e7-9f44-1890c2a1c46c)
- 7.5 HIGH — CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
- Weaknesses
- CWE-125, CWE-416, CWE-787
Description
Memory safety bugs present in Firefox 149 and Thunderbird 149. 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 and Thunderbird 150.
Affected configurations
• mozilla firefox (< 150.0)
• mozilla thunderbird (< 150.0)
Related
References
- https://bugzilla.mozilla.org/buglist.cgi?bug_id=1536243%2C1745382%2C1851073%2C1893400%2C1963301%2C2001319%2C2002899%2C2012436%2C2014435%2C2016901%2C2019916%2C2020486%2C2020612%2C2020817%2C2021788%2C2022051%2C2022367%2C2022431%2C2023302%2C2023670%2C2024225%2C2024238%2C2024240%2C2024265%2C2024367%2C2024369%2C2024424%2C2024760%2C2025281%2C2025361%2C2025387%2C2025466%2C2025954%2C2025958%2C2026278%2C2026292%2C2026297%2C2026378%2C2027148%2C2027287%2C2027341%2C2027384%2C2027427%2C2027694%2C2027993%2C2028009%2C2028270%2C2028416%2C2028524%2C2029295%2C2029699%2C2029800%2C2029801 bugzilla.mozilla.org
- https://www.mozilla.org/security/advisories/mfsa2026-30/ Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2026-33/ Vendor Advisory
- https://access.redhat.com/security/cve/CVE-2026-6784 access.redhat.com
- https://bugzilla.redhat.com/show_bug.cgi?id=2460084 bugzilla.redhat.com
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-6784.json security.access.redhat.com