KNOWN EXPLOITED VULNERABILITY DOSSIER
CVE-2026-53266
Linux · Kernel
Linux Kernel contains an out-of-bounds write vulnerability in the ebtables SNAT target which allows an ARP sender hardware address rewrite to write directly into a nonlinear socket-buffer fragment backed by a splice-imported file page. The impacted product(s) could be end-of-life (EoL) and/or end-of-service (EoS). Users are advised to discontinue use and/or transition to a supported version.
Correlated Federal Court Cases & Exploitation Context (0)
No federal court indictment in the current archive directly cites CVE-2026-53266. This record tracks its addition to the CISA Known Exploited Vulnerabilities (KEV) catalog on 2026-09-18.
Associated Government Advisories
Tracked under CISA Known Exploited Vulnerabilities Binding Operational Directive 22-01 for federal civilian agency remediation.