UpHeron
All vulnerabilities

Servers and applications

CVE-2018-16841

Samba from version 4.3.0 and before versions 4.7.12, 4.8.7 and 4.9.3 are vulnerable to a denial of service. When configured to accept smart-card authentication, Samba's KDC will call talloc_free() twice on the same memory if the principal in a validly signed certificate does not match the principal in the AS-REQ. This is only possible after authentication with a trusted certificate. talloc is…

Severity
Medium 6.5
Published
28 Nov 2018
Last changed
17 Jun 2026
Added to UpHeron
1 Nov 2026
Fixed in
4.7.12, 4.8.7, 4.9.3
Exploit chance
4.6% in the next 30 daysHigher than 91% of CVEs. EPSS by FIRST, 10 Nov 2026
Sources
NVD

Affected software

SoftwareAffected versions
SambaServers and applications · cpe:a:samba:samba
  • From 4.3.0 before 4.7.12
  • From 4.8.0 before 4.8.7
  • From 4.9.0 before 4.9.3

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2018-16841
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2018-16841