[UPDATE] [mittel] GnuTLS: Mehrere Schwachstellen

mediumCVE-2025-32988 CVE-2025-32989 CVE-2025-32990 CVE-2025-6395

Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in GnuTLS ausnutzen, um einen Denial of Service Angriff durchzuführen oder Informationen offenzulegen.

CSIRTS triage

vendor: GnuTLS product: GnuTLS Denial of service Information disclosure

What: Multiple vulnerabilities allow remote attackers to cause denial-of-service or disclose information.
Who is affected: Systems and applications using affected versions of GnuTLS cryptography library.
Urgency: Medium priority; not currently exploited but affects TLS/SSL security.
Action: Update GnuTLS to a patched version addressing CVE-2025-32988, CVE-2025-32989, CVE-2025-32990, and CVE-2025-6395.

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: 2026-09-04
Exploitation: Not in CISA KEV at last sync

Original advisory: https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2025-1526

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-2025-329881.2% 30-day exploitation probability. Patch within normal cadence, watch for KEV listing. Riskier than 67% of all EPSS-scored CVEs.
Moderate exploitation riskCVE-2025-329891.2% 30-day exploitation probability. Patch within normal cadence, watch for KEV listing. Riskier than 67% of all EPSS-scored CVEs.
Low exploitation riskCVE-2025-329900.76% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 53% of all EPSS-scored CVEs.
Low exploitation riskCVE-2025-63950.65% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 49% of all EPSS-scored CVEs.

Referenced CVEs

CVE	CSIRTS overview	External
CVE-2025-32988	coverage & exploitation status	NVD · CVE.org
CVE-2025-32989	coverage & exploitation status	NVD · CVE.org
CVE-2025-32990	coverage & exploitation status	NVD · CVE.org
CVE-2025-6395	coverage & exploitation status	NVD · CVE.org

Same CVEs, other sources

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

high[NEW] [high] Oracle Communications: Multiple vulnerabilitiescert-bund

Recent advisories for GnuTLS

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.

unknownCVE-2026-57163: PJSIP is a free and open source multimedia communication library written in C. Prior to commit…nvd · 2026-09-04
low[UPDATE] [niedrig] GnuTLS: Schwachstelle ermöglicht nicht spezifizierten Angriffcert-bund · 2026-09-04
high[UPDATE] [hoch] GnuTLS: Mehrere Schwachstellencert-bund · 2026-09-04
medium[UPDATE] [mittel] GnuTLS: Schwachstelle ermöglicht Denial of Servicecert-bund · 2026-09-04
medium[UPDATE] [medium] GnuTLS: Multiple vulnerabilities allow Denial of Servicecert-bund · 2026-09-01
medium[UPDATE] [medium] GnuTLS: Multiple vulnerabilities allow disclosure of information and DoScert-bund · 2026-09-01