CVE-2012-0804

Heap-based buffer overflow in the proxy_connect function in src/client.c in CVS 1.11 and 1.12 allows remote HTTP proxy servers to cause a denial of service (crash) and possibly execute arbitrary code via a crafted HTTP response.

Published: 2012-05-29 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2012-0804 is rated High Risk (73.2/100): CVSS Critical severity, with high exploitation likelihood (EPSS 8.40%, 94th percentile). EPSS ranks this CVE among the most likely to be exploited in the near term. High exploitation likelihood—assess exposure and prioritize 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-2012-0804

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 2026-06-18 8.24% 8.40% +0.16%
2 2026-06-15 2.51% 8.24% +5.73%
3 2026-06-07 — 2.51% —

Full EPSS history (15 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2012-0804

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
10.0 2.0 HIGH
AV:N/AC:L/Au:N/C:C/I:C/A:C 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:C)
Complete confidentiality impact.
Integrity impact (I:C)
Complete integrity impact.
Availability impact (A:C)
Complete availability impact.
 10.0 10.0 [email protected]

Weakness enumeration for CVE-2012-0804

OS Trackers for CVE-2012-0804

vendor priority summary link
alpine — CVE-2012-0804: 1 source package rows (cvs); 11 state rows across 11 repos (3.10-main, 3.11-main, 3.12-main, 3.17-main, 3.18-community, 3.19-community, 3.20-community, 3.21-community, 3.22-main, edge-community, edge-main); fixed 11, open 0. https://security.alpinelinux.org/vuln/CVE-2012-0804
debian not yet assigned CVE-2012-0804 not yet assigned priority: Debian including 1 source packages (cvs), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2012-0804
gentoo normal CVE-2012-0804: 1 GLSA(s) (201701-44), 1 atom(s) (dev-vcs/cvs); latest impact normal. https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2012-0804
redhat medium — https://access.redhat.com/security/cve/CVE-2012-0804
ubuntu medium CVE-2012-0804 medium priority: Ubuntu including 1 source packages (cvs), 6 status rows across 6 suites (hardy, lucid, maverick, natty, oneiric, upstream): released 5, ignored 1. https://ubuntu.com/security/CVE-2012-0804

Affected software / configurations for CVE-2012-0804

Vendor Product Version Raw CPE
cvs cvs 1.11 cpe:2.3:a:cvs:cvs:1.11:*:*:*:*:*:*:*
cvs cvs 1.12 cpe:2.3:a:cvs:cvs:1.12:*:*:*:*:*:*:*

References for CVE-2012-0804

cvelogic Threat Intelligence