MEDIUM
CVE-2019-3836
CWE-456Published: April 1, 2019· Updated: Jun 17, 2026
5.9
CVSS v3.1
Official 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.
Technical Analysis
CVE-2019-3836 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.
The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.
A successful exploit results in availability disruption (denial of service), with a CVSS base score of 5.9.
CVSS v3.1 Vector Breakdown
Exploitability
Attack VectorNetwork
Attack ComplexityHigh
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityNone
IntegrityNone
AvailabilityHigh
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Affected Vendors & Products
Exploit & PoC Resources
NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.
Official Patches & Advisories
All References (16)
→
http://lists.opensuse.org/opensuse-security-announce/2019-05/msg00017.htmlMailing List · Third Party Advisory
→
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3836Issue Tracking · Third Party Advisory
→
https://gitlab.com/gnutls/gnutls/issues/704Exploit · Issue Tracking · Third Party Advisory
→
https://security.gentoo.org/glsa/201904-14Third Party Advisory
→
https://security.netapp.com/advisory/ntap-20190502-0005/Third Party Advisory
→
http://lists.opensuse.org/opensuse-security-announce/2019-05/msg00017.htmlMailing List · Third Party Advisory
→
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3836Issue Tracking · Third Party Advisory
→
https://gitlab.com/gnutls/gnutls/issues/704Exploit · Issue Tracking · Third Party Advisory
→
https://security.gentoo.org/glsa/201904-14Third Party Advisory
→
https://security.netapp.com/advisory/ntap-20190502-0005/Third Party Advisory
Quick Facts
CVE IDCVE-2019-3836
CVSS Score5.9 / 10
SeverityMEDIUM
WeaknessCWE-456
CISA KEVNo
Affected3 vendor(s)
PublishedApr 1, 2019
Related CVEs (CWE-456)
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2019-3836 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.