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Servers and applications

CVE-2004-0081

OpenSSL 0.9.6 before 0.9.6d does not properly handle unknown message types, which allows remote attackers to cause a denial of service (infinite loop), as demonstrated using the Codenomicon TLS Test Tool.

Severity
Medium 5.0
Published
23 Nov 2004
Last changed
16 Jun 2026
Added to UpHeron
21 Oct 2026
Exploit chance
7.2% in the next 30 daysHigher than 94% of CVEs. EPSS by FIRST, 12 Nov 2026
Attack
Over the network · No login needed
Attacker can
Slow it down
CVSS vector
AV:N/AC:L/Au:N/C:N/I:N/A:P
Sources
NVD

Affected software

SoftwareAffected versions
OpenSSLServers and applications · cpe:a:openssl:openssl
  • Version 0.9.7c
  • Version 0.9.7b
  • Version 0.9.7a
  • Version 0.9.7
All 16 release lines
  • Version 0.9.6c
  • Version 0.9.6d
  • Version 0.9.6e
  • Version 0.9.6f
  • Version 0.9.6g
  • Version 0.9.6h
  • Version 0.9.6i
  • Version 0.9.6j
  • Version 0.9.6k
  • Version 0.9.7-beta1
  • Version 0.9.7-beta2
  • Version 0.9.7-beta3
  • Version 0.9.7
  • Version 0.9.7a
  • Version 0.9.7b
  • Version 0.9.7c

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2004-0081
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2004-0081