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High 8.8Published Feb 24, 2026
CVE-2026-2785Invalid pointer in the JavaScript Engine component
Updated under an hour ago ()
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It affects Mozilla Firefox and 1 other product. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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Invalid pointer in the JavaScript Engine component. This vulnerability was fixed in Firefox 148, Firefox ESR 140.8, Thunderbird 148, and Thunderbird 140.8.
- CVSS
- 8.8 HIGH (v3.1, CISA ADP)CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- Weakness (CWE)
- CWE-824
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- mozilla
- NVD analysis
- Modified
- Record last updated
- Apr 13, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Mozilla Firefox mozilla:firefox (from the name) | 140.8 builds before 140.* not affected; from 148 not affected | CNA record |
Mozilla Thunderbird mozilla:thunderbird (from the name) | 140.8 builds before 140.* not affected; from 148 not affected | CNA record |
mozilla firefox mozilla:firefox | before 140.8.0; before 148.0 | NVD |
mozilla thunderbird mozilla:thunderbird | before 140.8.0; before 148.0 | NVD |
References
- https://bugzilla.mozilla.org/show_bug.cgi?id=2013549issue-tracking, permissions-required
- https://www.mozilla.org/security/advisories/mfsa2026-13/vendor-advisory
- https://www.mozilla.org/security/advisories/mfsa2026-15/vendor-advisory
- https://www.mozilla.org/security/advisories/mfsa2026-16/vendor-advisory
- https://www.mozilla.org/security/advisories/mfsa2026-17/vendor-advisory
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.