{"id":"CVE-2026-93857","aliases":[],"title":"Fireware OS Pre-Authentication Stack Buffer Overflow in SIP Proxy Allows Remote Code Execution","description":"A stack-based buffer overflow vulnerability in Fireware OS's SIP proxy allows a remote, unauthenticated attacker to execute arbitrary code by sending a specially crafted request through a policy that uses the SIP proxy.","severity":"critical","score":9.2,"published":"2026-10-27T15:52:27.970Z","modified":"2026-10-27T15:52:27.970Z","withdrawn":false,"knownExploited":false,"affected":[],"references":["https://psirt.watchguard.com/CVE-2026-93857"],"sources":[{"name":"CVE","id":"CVE-2026-93857","modified":"2026-10-27T15:52:27.970Z","url":"https://www.cve.org/CVERecord?id=CVE-2026-93857"}],"assessments":[{"source":"CNA","vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","score":9.2}]}