CVE-2003-0971

GnuPG (GPG) 1.0.2, and other versions up to 1.2.3, creates ElGamal type 20 (sign+encrypt) keys using the same key component for encryption as for signing, which allows attackers to determine the private key from a signature.

Published: 2003-12-15 Last update: 2026-04-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2003-0971 is rated Moderate Risk (50.5/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 2.34%). EPSS rose +1.06% over the last day, indicating growing attacker interest. Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2003-0971

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2025-08-06 1.28% 2.34% +1.06%
2 2025-04-28 1.19% 1.28% +0.09%
3 2025-03-30 — 1.19% —

Full EPSS history (12 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2003-0971

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
5.0 2.0 MEDIUM
AV:N/AC:L/Au:N/C:P/I:N/A:N Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:N)
No availability impact.
 10.0 2.9 [email protected]

Weakness enumeration for CVE-2003-0971

OS Trackers for CVE-2003-0971

vendor priority summary link
redhat high — https://access.redhat.com/security/cve/CVE-2003-0971

Affected software / configurations for CVE-2003-0971

Vendor Product Version Raw CPE
gnu privacy_guard 1.0.2 cpe:2.3:a:gnu:privacy_guard:1.0.2:*:*:*:*:*:*:*
gnu privacy_guard 1.0.3 cpe:2.3:a:gnu:privacy_guard:1.0.3:*:*:*:*:*:*:*
gnu privacy_guard 1.0.3b cpe:2.3:a:gnu:privacy_guard:1.0.3b:*:*:*:*:*:*:*
gnu privacy_guard 1.0.4 cpe:2.3:a:gnu:privacy_guard:1.0.4:*:*:*:*:*:*:*
gnu privacy_guard 1.0.5 cpe:2.3:a:gnu:privacy_guard:1.0.5:*:*:*:*:*:*:*
gnu privacy_guard 1.0.6 cpe:2.3:a:gnu:privacy_guard:1.0.6:*:*:*:*:*:*:*
gnu privacy_guard 1.0.7 cpe:2.3:a:gnu:privacy_guard:1.0.7:*:*:*:*:*:*:*
gnu privacy_guard 1.2 cpe:2.3:a:gnu:privacy_guard:1.2:*:*:*:*:*:*:*
gnu privacy_guard 1.2.1 cpe:2.3:a:gnu:privacy_guard:1.2.1:*:*:*:*:*:*:*
gnu privacy_guard 1.2.2 cpe:2.3:a:gnu:privacy_guard:1.2.2:*:*:*:*:*:*:*
gnu privacy_guard 1.2.2 cpe:2.3:a:gnu:privacy_guard:1.2.2:rc1:*:*:*:*:*:*
gnu privacy_guard 1.2.3 cpe:2.3:a:gnu:privacy_guard:1.2.3:*:*:*:*:*:*:*

References for CVE-2003-0971

URL Tags
ftp://patches.sgi.com/support/free/security/advisories/20040202-01-U.asc
http://distro.conectiva.com.br/atualizacoes/?id=a&anuncio=000798
http://lists.gnupg.org/pipermail/gnupg-announce/2003q4/000276.html Patch Vendor Advisory
http://lists.gnupg.org/pipermail/gnupg-announce/2003q4/000277.html Patch
http://marc.info/?l=bugtraq&m=106995769213221&w=2
http://secunia.com/advisories/10304
http://secunia.com/advisories/10349
http://secunia.com/advisories/10399
http://secunia.com/advisories/10400
http://www.debian.org/security/2004/dsa-429
http://www.kb.cert.org/vuls/id/940388 US Government Resource
http://www.mandriva.com/security/advisories?name=MDKSA-2003:109
http://www.novell.com/linux/security/advisories/2003_048_gpg.html
http://www.redhat.com/support/errata/RHSA-2003-390.html
http://www.redhat.com/support/errata/RHSA-2003-395.html
http://www.securityfocus.com/bid/9115 Patch Vendor Advisory
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10982
cvelogic Threat Intelligence