CVE-2026-53266
Multiple vulnerabilities have been discovered in the Red Hat Linux kernel. Some of them allow an attacker to cause remote arbitrary code execution, privilege escalation, and remote denial of service.
CSIRTS triage
- What
- Multiple vulnerabilities allow an attacker to cause remote arbitrary code execution, privilege escalation, and remote denial of service.
- Who is affected
- Users of the Red Hat Linux kernel are affected.
- Urgency
- Remediation is urgent due to the potential for severe exploitation.
- Action
- Update the Red Hat Linux kernel to the latest version.
AI-assisted analysis generated from the source advisory — verify against the original.
⚡ Watch CVE-2026-53266
Get an email if CVE-2026-53266 is added to CISA KEV, gains public exploit code, or a new advisory cites it — max one per day, one-click unsubscribe.
Exploitation outlook
- Low exploitation risk0.12% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 2% of all EPSS-scored CVEs.
Advisory coverage (3)
- unknownMultiple vulnerabilities in the Red Hat Linux kernel (July 17, 2026)cert-fr-avis · 2026-07-17
- unknownMultiple vulnerabilities in Microsoft Azure Linux (June 29, 2026)cert-fr-avis · 2026-06-29
- mediumCVE-2026-53266: netfilter: bridge: make ebt_snat ARP rewrite writablemsrc · 2026-06-09
External references
Embed the live status
— this badge updates automatically when the KEV or exploit status changes. How to embed it →
[](https://www.csirts.com/cve/CVE-2026-53266)