Invalid Pointer Vulnerability in Firefox by Mozilla
CVE-2026-2805

9.8CRITICAL

Key Information:

Vendor

Mozilla
Status
Firefox
Thunderbird
Vendor
CVE Published:
24 February 2026

What is CVE-2026-2805?

An invalid pointer vulnerability has been identified in the DOM: Core & HTML component of Mozilla Firefox, affecting versions prior to 148. This flaw can potentially be exploited to manipulate the execution flow, which may lead to undesirable behavior in the application. Users are advised to update to the latest version of Firefox to mitigate 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=2014549
https://www.mozilla.org/security/advisories/mfsa2026-13/
https://www.mozilla.org/security/advisories/mfsa2026-16/

CVSS V3.1

Score:
9.8
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

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