Vulnerability · Published May 6, 2026 · Assigned by WatchGuard
CVE-2026-41286Stack-based Buffer Overflow in WatchGuard Agent Discovery Service on Windows Causes Denial of Service - Variant B
High 7.1
In plain English
A high-severity stack buffer overflow 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 0.3% (higher than 17% of all known vulnerabilities).
Severity (CVSS 4.0)7.1High
Exploit odds (30 days)0.3%top 83.3% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
Stack-based Buffer Overflow vulnerability in the WatchGuard Agent discovery service on Windows allows Overflow Buffers. An unauthenticated attacker on the same local network could exploit this vulnerability to crash the agent service.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| WatchGuard | WatchGuard Agent | 1.0.0.0 – before 1.25.03.0000 |
Weakness: CWE-121 · Vector: CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N
References
- https://psirt.watchguard.com/CVE-2026-41286 vendor-advisory
- https://www.watchguard.com/wgrd-psirt/advisory/wgsa-2026-00011 vendor-advisory