An integer overflow vulnerability in the WebSocket connection handling used by WatchGuard Fireware OS's Access Portal…
WatchGuard · Fireware OS
An integer overflow in the WebSocket connection handling of WatchGuard Fireware OS's Access Portal causes out-of-bounds writes to a heap buffer. A remote attacker with no authentication and no user interaction can exploit it by sending a specially crafted request while the Access Portal feature is enabled.
An integer overflow vulnerability in the WebSocket connection handling used by WatchGuard Fireware OS's Access Portal allows a remote, unauthenticated attacker to write beyond the bounds of a heap buffer by sending a specially crafted request while the Access Portal feature is enabled.
- Exploited
- Not confirmed
- Reports
- 0
- Tactics
- 0/15
Exploitation timelineDated milestones for a CVE: when it was disclosed, when exploit code became public, when exploitation was confirmed, and when threat reports named it.
Disclosed on 27 Oct 2026. No public exploit code or confirmed exploitation is recorded.
MITRE ATT&CKA public catalogue of the techniques attackers use, maintained by MITRE. Patchfirst uses it to describe what attackers do with a vulnerability. techniques
No techniques linkedNo ATT&CK techniques are linked to this CVE yet. MITRE CTID has not mapped it, and no report passage in the corpus ties it to a technique.
What security researchers reported
Not named in any threat report yetAlso mentioned in 3 community threat pulses (AlienVault OTX)
Weaker evidencePulses are indicator collections that anyone can publish. A mention is not confirmation of exploitation.
- Known_Cve | Oct 31, 2026 | Part 2/330 Oct 2026
- Known_Cve | Oct 30, 2026 | Part 2/229 Oct 2026
- Known_Cve | Oct 29, 2026 | Part 3/328 Oct 2026