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CVE-2026-41286 is a stack-based buffer overflow in the WatchGuard Agent discovery service on Windows. The flaw affects WatchGuard Agent on Windows versions up to and including 1.25.02.0000. An unauthenticated attacker on the same local network can send specially crafted requests to the discovery service, causing a stack memory buffer to overflow and terminate the service. Based on the available information, the documented outcome is denial of service through a crash of the agent service.
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What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.
What an attacker gets, and what they’ve been doing with it.
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Patch, then assume compromise.
No public exploits tracked yet. Mallory keeps watching.
No public exploit code observed for this vulnerability.
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
5 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A stack-based buffer overflow vulnerability in the WatchGuard Agent for Windows discovery service that allows unauthenticated attackers on the same local network to trigger denial of service via crafted requests.
A privilege escalation vulnerability in WatchGuard Agent on Windows.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.