Incorrect Boundary Conditions in Firefox Graphics Component
CVE-2026-0886

5.3MEDIUM

Key Information:

Vendor

Mozilla
Status
Firefox
Firefox Esr
Thunderbird
Vendor
CVE Published:
13 January 2026

What is CVE-2026-0886?

A boundary condition vulnerability present in the Graphics component of the Firefox browser can lead to potential security risks. This flaw affects various versions of Firefox, making it essential for users to check their software against the specified thresholds to mitigate any risks associated with this vulnerability.

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Affected Version(s)

Firefox < 147

Firefox ESR < 115.32

Firefox ESR < 140.7

References

https://bugzilla.mozilla.org/show_bug.cgi?id=2005658
https://www.mozilla.org/security/advisories/mfsa2026-01/
https://www.mozilla.org/security/advisories/mfsa2026-02/

CVSS V3.1

Score:
5.3
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
None
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Oskar L
JSON
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