Vulnerability · Published Aug 25, 2026 · Assigned by WatchGuard
CVE-2026-57910WatchGuard Agent improper authentication allows unauthenticated remote code execution
Critical 9.3
In plain English
A critical-severity missing authentication in WatchGuard Agent from WatchGuard. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 16% of all known vulnerabilities).
Severity (CVSS 4.0)9.3Critical
Exploit odds (30 days)0.2%top 84.2% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
Improper authentication in the WatchGuard Agent allows an unauthenticated attacker with network access to cause the agent to execute arbitrary code with elevated privileges.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| WatchGuard | WatchGuard Agent | 0 – before 1.17.01.0000 |
| WatchGuard | WatchGuard Agent | 0 – before 1.25.13.0000 |
| WatchGuard | WatchGuard Agent | 0 – before 1.17.21.0000 |
Weakness: CWE-306, CWE-347, CWE-494 · Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
References
- https://psirt.watchguard.com/CVE-2026-57910 vendor-advisory