[UPDATE] [low] expat: Vulnerability allows Denial of Service

lowCVE-2026-41080

A local attacker can exploit a vulnerability in expat to conduct a Denial of Service attack.

CSIRTS triage

vendor: Expat product: Expat Denial of service

What: A local attacker can exploit a vulnerability in expat to conduct a Denial of Service attack.
Who is affected: Local deployments of Expat are affected.
Urgency: Remediation is low urgency as the severity is low and exploitation is not currently active.
Action: No immediate action required.

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

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Details

Source: CERT-Bund (BSI) Security Advisories (DE · national-cert · site)
Severity: low
Published: 2026-07-10
Exploitation: Not in CISA KEV at last sync
Language: Machine-translated to English — verify against the original

Original advisory: https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2026-1159

Exploitation outlook

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-2026-410800.38% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 30% of all scored CVEs.

Referenced CVEs

CVE	CSIRTS overview	External
CVE-2026-41080	coverage & exploitation status	NVD · CVE.org

Same CVEs, other sources

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

unknownUSN-8520-1: Expat vulnerabilityubuntu

Recent advisories for expat

A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.

unknownUSN-8520-1: Expat vulnerabilityubuntu · 2026-07-09
medium[UPDATE] [medium] expat: Multiple vulnerabilitiescert-bund · 2026-07-08