Description
Integer overflow in the Libraries component in NSS. This vulnerability was fixed in Firefox 148, Firefox ESR 140.8, Thunderbird 148, and Thunderbird 140.8.
Published: 2026-02-24
Score: 8.8 High
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

No analysis available yet.

Remediation

No remediation available yet.

Tracking

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Advisories
Source ID Title
Debian DLA Debian DLA DLA-4495-1 thunderbird security update
Debian DLA Debian DLA DLA-4496-1 firefox-esr security update
Debian DLA Debian DLA DLA-4508-1 nss security update
Debian DSA Debian DSA DSA-6148-1 firefox-esr security update
Debian DSA Debian DSA DSA-6149-1 nss security update
Debian DSA Debian DSA DSA-6152-1 thunderbird security update
Ubuntu USN Ubuntu USN USN-8071-2 NSS vulnerability
History

Mon, 13 Apr 2026 14:30:00 +0000

Type Values Removed Values Added
Description Integer overflow in the Libraries component in NSS. This vulnerability affects Firefox < 148, Firefox ESR < 140.8, Thunderbird < 148, and Thunderbird < 140.8. Integer overflow in the Libraries component in NSS. This vulnerability was fixed in Firefox 148, Firefox ESR 140.8, Thunderbird 148, and Thunderbird 140.8.

Wed, 25 Mar 2026 17:30:00 +0000

Type Values Removed Values Added
References

Sat, 28 Feb 2026 03:15:00 +0000

Type Values Removed Values Added
Metrics cvssV3_1

{'score': 9.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

cvssV3_1

{'score': 8.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H'}


Wed, 25 Feb 2026 16:00:00 +0000

Type Values Removed Values Added
Weaknesses CWE-190
CPEs cpe:2.3:a:mozilla:firefox:*:*:*:*:-:*:*:*
cpe:2.3:a:mozilla:firefox:*:*:*:*:esr:*:*:*
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:-:*:*:*
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:esr:*:*:*
Metrics cvssV3_1

{'score': 6.1, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N'}

cvssV3_1

{'score': 9.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'}


Wed, 25 Feb 2026 12:00:00 +0000

Type Values Removed Values Added
First Time appeared Mozilla
Mozilla firefox
Mozilla firefox Esr
Mozilla thunderbird
Vendors & Products Mozilla
Mozilla firefox
Mozilla firefox Esr
Mozilla thunderbird

Wed, 25 Feb 2026 00:15:00 +0000

Type Values Removed Values Added
References
Metrics threat_severity

None

cvssV3_1

{'score': 6.1, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N'}

threat_severity

Moderate


Tue, 24 Feb 2026 18:00:00 +0000

Type Values Removed Values Added
Description Integer overflow in the Libraries component in NSS. This vulnerability affects Firefox < 148 and Firefox ESR < 140.8. Integer overflow in the Libraries component in NSS. This vulnerability affects Firefox < 148, Firefox ESR < 140.8, Thunderbird < 148, and Thunderbird < 140.8.
References

Tue, 24 Feb 2026 14:00:00 +0000

Type Values Removed Values Added
Description Integer overflow in the Libraries component in NSS. This vulnerability affects Firefox < 148 and Firefox ESR < 140.8.
Title Integer overflow in the Libraries component in NSS
References

Subscriptions

Mozilla Firefox Firefox Esr Thunderbird
cve-icon MITRE

Status: PUBLISHED

Assigner: mozilla

Published:

Updated: 2026-04-13T13:53:25.426Z

Reserved: 2026-02-19T15:06:13.592Z

Link: CVE-2026-2781

cve-icon Vulnrichment

Updated: 2026-03-25T16:26:01.616Z

cve-icon NVD

Status : Modified

Published: 2026-02-24T14:16:26.533

Modified: 2026-04-13T15:17:25.730

Link: CVE-2026-2781

cve-icon Redhat

Severity : Moderate

Publid Date: 2026-02-24T13:33:15Z

Links: CVE-2026-2781 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2026-02-25T11:39:28Z

Weaknesses