CVE-2026-2781
critical · 9.8Integer overflow in the Libraries component in NSS. This vulnerability was fixed in Firefox 148, Firefox ESR 140.8, Thunderbird 148, Thunderbird 140.8, and Firefox ESR 115.35.
9.8
CVSS
0.4%
EPSS (exploit prob.)
30th
EPSS percentile
2026-02-24
Published
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weaknesses
CWE-190
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| mozilla | firefox | < 140.8.0 |
| mozilla | firefox | < 148.0 |
| mozilla | thunderbird | < 140.8.0 |
| mozilla | thunderbird | < 148.0 |
Check a specific version with /api/v1/cve/match.
References
- https://bugzilla.mozilla.org/show_bug.cgi?id=2009552
- https://www.mozilla.org/security/advisories/mfsa2026-13/
- https://www.mozilla.org/security/advisories/mfsa2026-15/
- https://www.mozilla.org/security/advisories/mfsa2026-16/
- https://www.mozilla.org/security/advisories/mfsa2026-17/
- https://www.mozilla.org/security/advisories/mfsa2026-31/
- https://lists.debian.org/debian-lts-announce/2026/03/msg00012.html
Query this programmatically:
curl https://evil-db.io/api/v1/cve/CVE-2026-2781