CISA Adds One Known Exploited Vulnerability to Catalog
Summary
CISA has added CVE-2026-31431, a Linux Kernel vulnerability, to its Known Exploited Vulnerabilities (KEV) Catalog. This action is based on evidence of active exploitation, which poses significant risks to federal agencies. CISA urges all organizations to prioritize the remediation of KEV Catalog vulnerabilities.
IFF Assessment
The addition of a new exploited vulnerability to CISA's KEV Catalog indicates a current threat that defenders must address.
Severity
CISA KEV: Listed as actively exploited. Federal patch due: May 15, 2026. Known ransomware use: Unknown.
Defender Context
The inclusion of CVE-2026-31431 in CISA's KEV Catalog means this vulnerability is actively being exploited in the wild. Defenders should prioritize patching or mitigating this vulnerability immediately, especially within federal agencies subject to Binding Operational Directive 22-01. This highlights the ongoing importance of proactive vulnerability management and timely patching.