CVE-2026-5419: Guntls: gnutls: information disclosure via timing side-channel in pkcs#7 padding removal
CSIRTS triage
- What
- A timing side-channel vulnerability in GnuTLS can lead to information disclosure during pkcs#7 padding removal.
- Who is affected
- Users of GnuTLS.
- Urgency
- Remediation is low urgency due to the low CVSS score of 3.7 and lack of reported exploitation.
- Action
- Consider upgrading GnuTLS to a patched version when available.
AI-assisted analysis generated from the source advisory — verify against the original.
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Details
Original advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-5419
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-2026-54190.38% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 30% of all scored CVEs.
Referenced CVEs
| CVE | CSIRTS overview | External |
|---|---|---|
| CVE-2026-5419 | coverage & exploitation status | NVD · CVE.org |
Same CVEs, other sources
How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.
- high[UPDATE] [high] GnuTLS: Multiple vulnerabilitiescert-bund
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