[UPDATE] [medium] GnuTLS: Multiple vulnerabilities allow Denial of Service
A remote, anonymous attacker can exploit multiple vulnerabilities in GnuTLS to conduct a Denial of Service attack.
CSIRTS triage
- What
- Multiple vulnerabilities allow a remote, anonymous attacker to conduct a Denial of Service attack.
- Who is affected
- Remote, anonymous attackers exploiting vulnerabilities in GnuTLS.
- Urgency
- Remediation is medium urgency due to the potential for Denial of Service attacks.
- Action
- Apply the latest patches for GnuTLS.
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-2026-0359
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-2025-148310.64% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 46% of all scored CVEs.
- Moderate exploitation riskCVE-2026-15841.4% 30-day exploitation probability. Patch within normal cadence, watch for KEV listing. Riskier than 69% of all scored CVEs.
Referenced CVEs
| CVE | CSIRTS overview | External |
|---|---|---|
| CVE-2025-14831 | coverage & exploitation status | NVD · CVE.org |
| CVE-2026-1584 | coverage & exploitation status | NVD · CVE.org |
Same CVEs, other sources
How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.
- unknownUSN-8502-1: GnuTLS vulnerabilitiesubuntu
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.
- high[UPDATE] [high] GnuTLS: Multiple vulnerabilitiescert-bund · 2026-07-10
- medium[UPDATE] [medium] GnuTLS: Multiple vulnerabilitiescert-bund · 2026-07-07
- medium[UPDATE] [medium] GnuTLS: Vulnerability allows denial of servicecert-bund · 2026-07-07
- low[UPDATE] [low] GnuTLS: Vulnerability allows unspecified attackcert-bund · 2026-07-07
- unknownUSN-8502-1: GnuTLS vulnerabilitiesubuntu · 2026-07-06
- lowCVE-2026-5419: Guntls: gnutls: information disclosure via timing side-channel in pkcs#7 padding removalmsrc · 2026-06-09
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