[NEW] [medium] Red Hat Enterprise Linux (pyasn1): Vulnerability enables Denial of Service

A remote, anonymous attacker can exploit a vulnerability in Red Hat Enterprise Linux (pyasn1) to perform a Denial of Service attack.

CSIRTS triage

What: A vulnerability in Red Hat Enterprise Linux pyasn1 library enables denial of service.
Who is affected: Red Hat Enterprise Linux deployments using pyasn1.
Urgency: Moderate urgency; denial of service vulnerability has limited impact compared to code execution or privilege escalation.
Action: Apply Red Hat security update for pyasn1 addressing CVE-2026-59886.

AI-assisted analysis generated from the source advisory — verify against the original.

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EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Low exploitation riskCVE-2026-598860.34% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 27% of all EPSS-scored CVEs.

CVE	CSIRTS overview	External
CVE-2026-59886	coverage & exploitation status	NVD · CVE.org

How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.