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Servers and applications

CVE-2003-0545

Double free vulnerability in OpenSSL 0.9.7 allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via an SSL client certificate with a certain invalid ASN.1 encoding.

Severity
Critical 9.8
Published
17 Nov 2003
Last changed
16 Jun 2026
Added to UpHeron
21 Oct 2026
Exploit chance
87% in the next 30 daysHigher than 99% of CVEs. EPSS by FIRST, 12 Nov 2026
Weakness
Double free (CWE-415)
Attack
Over the network · No login needed · No user action needed
Attacker can
Read data · Change data · Take it down
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Sources
NVD

Affected software

SoftwareAffected versions
OpenSSLServers and applications · cpe:a:openssl:openssl
  • Version 0.9.6
  • Version 0.9.7

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2003-0545
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2003-0545