Memory Management Issue in Firefox by Mozilla
CVE-2026-2806

9.1CRITICAL

Key Information:

Vendor

Mozilla
Status
Firefox
Thunderbird
Vendor
CVE Published:
24 February 2026

What is CVE-2026-2806?

An uninitialized memory issue has been identified in the Graphics: Text component of Mozilla's Firefox, impacting versions earlier than 148. This vulnerability could be exploited by attackers to potentially read sensitive information from memory, leading to a compromise of user data and system integrity. Users are advised to upgrade to the latest version of Firefox to mitigate any risks associated with this vulnerability.

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Affected Version(s)

Firefox < 148

Thunderbird < 148

References

https://bugzilla.mozilla.org/show_bug.cgi?id=2006199
https://www.mozilla.org/security/advisories/mfsa2026-13/
https://www.mozilla.org/security/advisories/mfsa2026-16/

CVSS V3.1

Score:
9.1
Severity:
CRITICAL
Confidentiality:
High
Integrity:
None
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Zijie Zhao
JSON
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