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CVE-2026-6772

Incorrect boundary conditions in the Libraries component in NSS

Published: Apr 21, 2026Updated: Apr 21, 2026 Sources: CVE List NVD
NVD MITRE
7.5CVSS
HIGH

Incorrect boundary conditions in the Libraries component in NSS. This vulnerability was fixed in Firefox 150, Firefox ESR 115.35, and Firefox ESR 140.10.

EPSS Score
N/A
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
No Fix Available

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:HI:NA:N
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:NIntegrity
None
A:NAvailability
None

Affected Products

Firefox
Mozilla

Exploitability

No known exploits, KEV entries, or remediation guidance available for this vulnerability yet.

References

https://bugzilla.mozilla.org/show_bug.cgi?id=2026089
bugzilla.mozilla.org
https://www.mozilla.org/security/advisories/mfsa2026-30/
mozilla.org
https://www.mozilla.org/security/advisories/mfsa2026-31/
mozilla.org
and 1 more references View all →

Timeline

Published
Apr 21, 2026
Last Updated
Apr 21, 2026

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