CVE-2003-0545

Double free vulnerability in OpenSSL 0.9.7 allows remote attackers to cause a denial of service ...

9.8 CriticalFix available

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.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: None

What an attacker can affect

Confidentiality: High
Integrity: High
Availability: High

Exploit likelihood

87.5%Up 80.0 points since Feb 4, 2022

What each source reports

NVD Score used 9.8

Record: CVE-2003-0545
CVSS 3.1: 9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 2.0: 10.0 HighAV:N/AC:L/Au:N/C:C/I:C/A:C
Weakness: CWE-415
Updated: 2026-11-02

CVE List No score

Record: CVE-2003-0545
Updated: 2026-11-02

EUVDEUVD-2003-0539 No score

Record: EUVD-2003-0539
Updated: 2026-11-03

GitHub AdvisoriesGHSA-mmjc-3g2p-897m 9.8

Double free vulnerability in OpenSSL 0.9.7 allows remote attackers to cause a denial of service ...

Record: GHSA-mmjc-3g2p-897m
CVSS 3.1: 9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness: CWE-119, CWE-415
Updated: 2026-11-02

OSV 9.8

Record: CVE-2003-0545
CVSS 3.1: 9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated: 2026-11-02

OSVDEBIAN-CVE-2003-0545 9.8

Record: DEBIAN-CVE-2003-0545
CVSS 3.1: 9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated: 2026-11-02

Affected products

openssl

Affected packages

Affected packages
Package	Affected	Fixed
`openssl` Debian:12	before 0.9.7c	0.9.7c
`openssl` Debian:13	before 0.9.7c	0.9.7c
`openssl` Debian:14	before 0.9.7c	0.9.7c
`openssl` Debian:3.0 From an advisory covering 3 CVEs	before 0.9.6c-2.woody.4	0.9.6c-2.woody.4
`openssl095` Debian:3.0 From an advisory covering 3 CVEs	before 0.9.5a-6.woody.3	0.9.5a-6.woody.3

History

History
Recorded	Changed	Sources
Nov 6, 2026	affected, facts
Nov 3, 2026	aliases	EUVD
Nov 2, 2026	first indexed	CVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2003-0545 is a critical vulnerability (CVSS 9.8) in Openssl, published October 1, 2003. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 87.5%, the 99th percentile. Fixed in openssl 0.9.7c.

References

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