Buffer overflow in Mozilla products - CVE-2026-7323
Published: April 28, 2026
Vulnerability identifier: #VU128410
CSH Severity: High
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber
CVE-ID: CVE-2026-7323
CWE-ID: CWE-119
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
Mozilla Firefox
Firefox ESR
Firefox for Android
Mozilla Firefox
Firefox ESR
Firefox for Android
Software vendor:
Mozilla
Mozilla
Description
The vulnerability allows a remote attacker to execute arbitrary code.
The vulnerability exists due to memory corruption when rendering web content. A remote attacker can trigger memory corruption using specially crafted web content to execute arbitrary code.
Remediation
Install security update from vendor's website.
External links
- https://www.mozilla.org/en-US/security/advisories/mfsa2026-36/
- https://www.mozilla.org/en-US/security/advisories/mfsa2026-35/
- https://bugzilla.mozilla.org/buglist.cgi?bug_id=2028537
- https://bugzilla.mozilla.org/buglist.cgi?bug_id=2029911
- https://bugzilla.mozilla.org/buglist.cgi?bug_id=2031121
- https://bugzilla.mozilla.org/buglist.cgi?bug_id=2033602