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CVE-2012-4555

16
FAUCET Score

CVE-2012-4555 describes a denial-of-service vulnerability in Red Hat Certificate System (RHCS) versions prior to 8.1.3, specifically within its token processing system (pki-tps). An authenticated remote attacker can trigger a NULL pointer dereference, crashing an Apache httpd web server child process. This vulnerability has a CVSS score of 4.0, indicating a low severity with network access and low attack complexity, resulting in partial availability impact. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= 8.1.1CPE matchmatch criteria
cpe:2.3:a:redhat:certificate_system:*:*:*:*:*:*:*:*
7.1CPE matchmatch criteria
cpe:2.3:a:redhat:certificate_system:7.1:*:*:*:*:*:*:*
7.2CPE matchmatch criteria
cpe:2.3:a:redhat:certificate_system:7.2:*:*:*:*:*:*:*
7.3CPE matchmatch criteria
cpe:2.3:a:redhat:certificate_system:7.3:*:*:*:*:*:*:*
8CPE matchmatch criteria
cpe:2.3:a:redhat:certificate_system:8:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

4.0MEDIUM

AV:N/AC:L/Au:S/C:N/I:N/A:P

Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
LOW
Authentication
SINGLE
Exploitability Score
8.0
Impact Score
2.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
1.19%
Probability of exploitation in next 30 days
EPSS Percentile
64.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0119 is in the 79th percentile among its peer group of 21,954 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

redhatpatch availablevia redhat_api
Product: Red Hat Certificate System 8Fixed in: pki-common-0:8.1.3-2.el5pki
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Certificate System 8Fixed in: pki-tps-0:8.1.3-2.el5pki
View patch

Vendor Advisories (1)

redhatCVE-2012-4555Low

pki-tps: Temporary denial of service on interrupted token format operations

Dec 6, 2012

References

rhn.redhat.com / errata/RHSA-2012-1550.html
Vendor Advisory
bugzilla.redhat.com / show_bug.cgi
secunia.com / advisories/51482
Vendor Advisory
securityfocus.com / bid/56843
securitytracker.com / id