[UPDATE] [low] expat: Vulnerability allows Denial of Service
A local attacker can exploit a vulnerability in expat to conduct a Denial of Service attack.
CSIRTS triage
- What
- A vulnerability allows a local attacker to conduct a Denial of Service attack.
- Who is affected
- Users of Expat software.
- Urgency
- Remediation is low priority as the severity is low and exploitation requires local access.
- Action
- Update to the latest version of Expat to mitigate the 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-2026-1448
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-2026-451860.44% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 36% of all scored CVEs.
Referenced CVEs
| CVE | CSIRTS overview | External |
|---|---|---|
| CVE-2026-45186 | coverage & exploitation status | NVD · CVE.org |
Same CVEs, other sources
How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.
- unknownDSA-6404-1 expat - security updatedebian
- high[UPDATE] [high] IBM HTTP Server: Multiple Vulnerabilitiescert-bund
More from CERT-Bund (BSI) Security Advisories
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- medium[UPDATE] [medium] Linux Kernel: Multiple vulnerabilities2026-07-31
- medium[UPDATE] [medium] Linux Kernel: Multiple vulnerabilities allow unspecified attack2026-07-31