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No exploitation reportedFix available

CVE-2019-3836

No exploitation reported by the sources we read.

  • Published2019-04-01
  • WeaknessCWE-456 · CWE-824

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

It was discovered in gnutls before version 3.6.7 upstream that there is an uninitialized pointer access in gnutls versions 3.6.3 or later which can be triggered by certain post-handshake messages.

Timeline

dates in UTC
  1. 2019-04-0115:29CVE publishedNVD

Versions per branch

NVD
Fedoraproject fedora
BranchAffectedFixed in
28.x= 28no fix published
Gnu gnutls
BranchAffectedFixed in
3.6≥ 3.6.3, < 3.6.73.6.7
Opensuse leap
BranchAffectedFixed in
15.0= 15.0no fix published

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

  • gnutlsWolfiall versions · fixed in 0
  • gnutlsSUSE:Linux Enterprise Module for Desktop Applications 15all versions · fixed in 3.6.7-6.8.1
  • gnutlsSUSE:Linux Enterprise Module for Basesystem 15all versions · fixed in 3.6.7-6.8.1
  • gnutlsRed Hat:enterprise_linux:8::baseosall versions · fixed in 0:3.6.8-8.el8and 5 other packages
  • gnutlsopenSUSE:Tumbleweedall versions · fixed in 3.7.2-1.2
  • gnutlsopenSUSE:Leap 15.0all versions · fixed in 3.6.7-lp150.9.1
  • gnutlsCleanStartall versions · fixed in 3.6.7-r0
  • gnutlsChainguardall versions · fixed in 0

21 more package ranges on OSV.dev

Vendor advisories

  • CVE-2019-3836 Red Hat Product Security75 products fixed

    gnutls: invalid pointer access upon receiving async handshake messages

  • RHSA-2019:3600 Red Hat Product Security75 products fixed

    Red Hat Security Advisory: gnutls security, bug fix, and enhancement update

Full record on NVD

Fix

  1. Vendor fix Red Hat Product Security RHSA-2019:3600 · 75 productsFor details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof of concept
Metasploit modules
none listed
Metasploit Framework

Sources

  • CNACVSS 3.05.9known since 2026-10-23
  • NVDCVSS 3.07.5read 2026-10-23
  • NVDCVSS 2.05read 2026-10-23
  • CNAweakness (CWE)CWE-456known since 2026-10-23
  • NVDweakness (CWE)CWE-824read 2026-10-23
  • FIRST EPSSEPSS score3.4 %2026-11-08
  • OSVaffected packages—
  • GitHub Advisoriesadvisory—

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Published
2019-04-01
Last Modified
2026-06-17
NVD status
Modified
GitHub Advisory
GHSA-fqw6-7w7w-627p

Frequently asked questions

What is CVE-2019-3836?

It was discovered in gnutls before version 3.6.7 upstream that there is an uninitialized pointer access in gnutls versions 3.6.3 or later which can be triggered by certain post-handshake messages.

Is CVE-2019-3836 actively exploited?

Active exploitation of CVE-2019-3836 has not been confirmed. Its EPSS score was 3.4% on 2026-11-08, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2019-3836?

CVE-2019-3836 has a CVSS v3 base score of 7.5 (HIGH severity), with vector string CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

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