Fireware OS NULL Pointer Dereference in Management Interface Allows Unauthenticated 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- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean?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
WatchGuard Fireware OS is affected through a flaw in its management interface that lets an unauthenticated remote attacker with network access crash the management service with a specially crafted login request. Repeated attacks can disconnect administrators, interrupt management tasks, and prevent managing the device, though traffic processing is not affected.
Summarized by anthropic/claude-haiku-5.5. Verify details against the original sources.
Read the original description
A NULL pointer dereference vulnerability in WatchGuard Fireware OS’s management interface allows a remote, unauthenticated attacker with network access to the management interface to crash the management service by sending a specially crafted login request. Repeated exploitation terminates all active administrator sessions and in-progress management operations and can prevent management of the device. Traffic processing is not affected.
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