Summary iPlain-English security verdict for GnuTLS, generated from its current health score, actively-exploited vulnerabilities, and latest supported version.
GnuTLS currently scores 0/100 — critical. No tracked vulnerabilities are currently known to be exploited in the wild. Upgrade promptly to address the open critical vulnerabilities.
Disclosure trend iNew CVEs published for GnuTLS each year (NVD). A higher bar means more disclosures that year — more scrutiny, not necessarily less safe.
Patch priority — what to act on iThe issues to fix first — actively exploited (CISA KEV) first, then by exploitation probability (EPSS), then severity. Each row's "→ fixed in" is the earliest version that patches it; "see advisory" means no fixed version is published.
Most urgent first — actively exploited, then likeliest to be exploited.
CVE-2009-3555 CRITICAL CWE-295 EPSS 87% → see advisory CVE-2019-3829 MEDIUM Use-after-free EPSS 59% → fixed in 3.6.7 CVE-2017-5334 CRITICAL Double free EPSS 33% → see advisory CVE-2017-5336 CRITICAL Memory corruption EPSS 7% → see advisory CVE-2017-5337 CRITICAL Memory corruption EPSS 6% → see advisory CVE-2021-20231 CRITICAL Use-after-free EPSS 4% → fixed in 3.7.1 CVE-2021-20232 CRITICAL Use-after-free EPSS 3% → fixed in 3.7.1Get alerted about GnuTLS
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Frequently asked
Is GnuTLS safe and patched?
GnuTLS currently scores 0/100 — critical. No tracked vulnerabilities are currently known to be exploited in the wild. Upgrade promptly to address the open critical vulnerabilities.
What should I do about GnuTLS now?
Review the patch-priority list, apply the available fixes (or move to the latest release), and confirm against GNU's official advisory.
lifecycle unknown — needs latest supported version
Informational only, from public data (NVD · CISA KEV · EPSS · endoflife.date), and can lag or miss vendor-specific fixes. Always confirm against GNU's official advisory before you patch or upgrade — GnuTLS official site ↗