[UPDATE] [medium] expat: Vulnerability allows Denial of Service
A remote, anonymous attacker can exploit a vulnerability in expat to conduct a Denial of Service attack.
CSIRTS triage
- What
- A vulnerability in expat can be exploited to conduct Denial of Service attacks.
- Who is affected
- Users of expat are affected.
- Urgency
- Remediation is necessary to prevent potential Denial of Service attacks.
- Action
- Update expat to the latest version to mitigate this vulnerability.
AI-assisted analysis generated from the source advisory — verify against the original.
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Details
Original advisory: https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2025-0562
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.
- Moderate exploitation riskCVE-2024-81761.6% 30-day exploitation probability. Patch within normal cadence, watch for KEV listing. Riskier than 73% of all scored CVEs.
Referenced CVEs
| CVE | CSIRTS overview | External |
|---|---|---|
| CVE-2024-8176 | coverage & exploitation status | NVD · CVE.org |
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.
- unknownDSA-6404-1 expat - security updatedebian · 2026-07-30
- low[UPDATE] [low] expat: Vulnerability allows Denial of Servicecert-bund · 2026-07-23
- medium[UPDATE] [medium] expat: Multiple vulnerabilitiescert-bund · 2026-07-22
- low[UPDATE] [low] expat: Vulnerability allows Denial of Servicecert-bund · 2026-07-15
- unknownUSN-8520-1: Expat vulnerabilityubuntu · 2026-07-09
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