CVE-2012-4556

The token processing system (pki-tps) in Red Hat Certificate System (RHCS) before 8.1.3 allows remote attackers to cause a denial of service (Apache httpd web server child process restart) via certain unspecified empty search fields in a user certificate search query.

Published: 2013-01-04 Last update: 2026-04-29 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2012-4556 is rated Low Risk (39.1/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 1.19%). Monitor for updates and reassess as exploit intelligence or EPSS changes.

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-2012-4556

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 2026-06-15 0.43% 1.19% +0.76%
2 2023-03-07 1.13% 0.43% -0.70%
3 2023-02-13 — 1.13% —

Full EPSS history (5 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2012-4556

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
4.0 2.0 MEDIUM
AV:N/AC:L/Au:S/C:N/I:N/A:P 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:S)
A single authentication is required.
Confidentiality impact (C:N)
No confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:P)
Partial availability impact.
 8.0 2.9 [email protected]

Weakness enumeration for CVE-2012-4556

OS Trackers for CVE-2012-4556

vendor priority summary link
redhat low — https://access.redhat.com/security/cve/CVE-2012-4556

Affected software / configurations for CVE-2012-4556

Vendor Product Version Raw CPE
redhat certificate_system <= 8.1.1 cpe:2.3:a:redhat:certificate_system:*:*:*:*:*:*:*:*
redhat certificate_system 7.1 cpe:2.3:a:redhat:certificate_system:7.1:*:*:*:*:*:*:*
redhat certificate_system 7.2 cpe:2.3:a:redhat:certificate_system:7.2:*:*:*:*:*:*:*
redhat certificate_system 7.3 cpe:2.3:a:redhat:certificate_system:7.3:*:*:*:*:*:*:*
redhat certificate_system 8.0 cpe:2.3:a:redhat:certificate_system:8.0:*:*:*:*:*:*:*
redhat certificate_system 8.1 cpe:2.3:a:redhat:certificate_system:8.1:*:*:*:*:*:*:*

References for CVE-2012-4556

cvelogic Threat Intelligence