THREAT OPS › Threat News › [NVD] CVE-2026-4266 (MEDIUM 6.7) — An Insecure Deserialization vulnerability in WatchGuard Fireware OS allows an attacker that has obtained write access to the local filesystem through another vulnerability to execute arbitrary code in the context of the portald user.
Note, this vulnerability does not affect Fire
[NVD] CVE-2026-4266 (MEDIUM 6.7) — An Insecure Deserialization vulnerability in WatchGuard Fireware OS allows an attacker that has obtained write access to the local filesystem through another vulnerability to execute arbitrary code in the context of the portald user. Note, this vulnerability does not affect Fire
CVE-2026-4266 CVSS: 6.7 MEDIUM Published: 2026-03-30T13:16:22.573
An Insecure Deserialization vulnerability in WatchGuard Fireware OS allows an attacker that has obtained write access to the local filesystem through another vulnerability to execute arbitrary code in the context of the portald user.
Note, this vulnerability does not affect Firebox platforms that do not support the Access Portal f
Indicators of compromise
- CVE-2026-4266cve
Original source: https://nvd.nist.gov/vuln/detail/CVE-2026-4266