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CVE-2026-13384 is a high-severity out-of-bounds write vulnerability in the wgagent process of WatchGuard Fireware OS. The flaw can be triggered through specially crafted requests sent to the Management Web UI and may result in memory corruption leading to arbitrary code execution. According to the provided information, exploitation requires an authenticated privileged user. Affected versions are Fireware OS 12.1 through 12.12 inclusive, and 2025.1 through 2026.2 inclusive.
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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.
If you can’t patch tonight, do this now.
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.
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.