CVE-2026-90442EUVD-2026-111153GHSA-Q6QQ-W5QX-FFFM
Fireware OS Authenticated Stack Buffer Overflow in certd Allows Denial of Service
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- Fix
- Fixed in 2026.4, 12.12.4, 12.5.22
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
Summary
Fireware OS, the operating system on WatchGuard Firebox firewall appliances, is affected. An authenticated attacker with access to the Firebox management interface could crash the certificate management service (certd) and potentially run arbitrary code on the device.
Summarized by anthropic/claude-haiku-5.5. Verify details against the original sources.
Read the original description
A stack-based buffer overflow vulnerability in the Fireware OS certd process allows an authenticated attacker with access to the Firebox management interface to crash the certificate management service and potentially execute arbitrary code by sending a specially crafted request.
Timeline
- CVE published
- First seen by cve.now
Affected versions
- WatchGuard Fireware OS
From 2025.1 · fixed in 2026.4; From 12.0 · fixed in 12.12.4
- WatchGuard Fireware OS
From 12.0 · fixed in 12.5.22