[UPDATE] [medium] libtasn1: Vulnerability allows Denial of Service

mediumCVE-2025-13151

A remote, anonymous attacker can exploit a vulnerability in libtasn1 to carry out a Denial of Service attack.

CSIRTS triage

vendor: libtasn1 product: libtasn1 Denial of service

What: A vulnerability allows a remote, anonymous attacker to carry out a Denial of Service attack.
Who is affected: Deployments of libtasn1 are affected.
Urgency: Remediation is medium urgency as exploitation is possible but not currently active.
Action: Update to the latest version of libtasn1.

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: medium
Published: 2026-08-06
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-2026-0044

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-2025-131511.1% 30-day exploitation probability. Patch within normal cadence, watch for KEV listing. Riskier than 65% of all EPSS-scored CVEs.

Referenced CVEs

CVE	CSIRTS overview	External
CVE-2025-13151	coverage & exploitation status	NVD · CVE.org

Same CVEs, other sources

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

highexploited[UPDATE] [hoch] IBM QRadar SIEM: Mehrere Schwachstellencert-bund
unknownNCSC-2026-0315 [1.00] [M/H] Vulnerabilities resolved in Oracle MySQLncsc-nl
high[NEW] [high] IBM App Connect Enterprise: Multiple vulnerabilitiescert-bund
unknownNCSC-2026-0309 [1.00] [M/H] Vulnerabilities resolved in Oracle Communicationsncsc-nl
high[NEW] [HIGH] Oracle Communications: Multiple Vulnerabilitiescert-bund
high[NEW] [high] Oracle MySQL: Multiple vulnerabilitiescert-bund
unknownMultiple vulnerabilities in Oracle MySQL (August 19, 2026)cert-fr-avis
high[NEW] [high] Oracle Communications: Multiple vulnerabilitiescert-bund

Recent advisories for libtasn1

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.

medium[UPDATE] [medium] libtasn1: Vulnerability enables denial of servicecert-bund · 2026-09-01