What’s Vulnerable › Vulnerabilities

CVE-2026-2794: Information disclosure due to uninitialized memory in Firefox and Firefox Focus for Android

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-02-24 · updated 2026-07-15
• Weakness: CWE-908

Description

Information disclosure due to uninitialized memory in Firefox and Firefox Focus for Android. This vulnerability was fixed in Firefox 148.

Affected products

• Mozilla Firefox: before 148.0 — fixed in 148.0

How to fix

Upgrade to a fixed version: Mozilla Firefox 148.0. Check the vendor advisory for mitigations.

References

• https://bugzilla.mozilla.org/show_bug.cgi?id=2008365
• https://www.mozilla.org/security/advisories/mfsa2026-13/
• https://access.redhat.com/security/cve/CVE-2026-2794
• https://bugzilla.redhat.com/show_bug.cgi?id=2442286
• https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-2794.json

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