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CVE-2012-3547

25
FAUCET Score

CVE-2012-3547 describes a stack-based buffer overflow in the cbtls_verify function of FreeRADIUS versions 2.1.10 through 2.1.12. This vulnerability, triggered by a long "not after" timestamp in a client certificate during TLS-based EAP methods, allows remote attackers to cause a denial of service and potentially execute arbitrary code. With a CVSS score of 6.8, it presents a moderate risk, requiring medium attack complexity but potentially leading to partial confidentiality, integrity, and availability compromise. 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
2.1.10CPE matchmatch criteria
cpe:2.3:a:freeradius:freeradius:2.1.10:*:*:*:*:*:*:*
2.1.11CPE matchmatch criteria
cpe:2.3:a:freeradius:freeradius:2.1.11:*:*:*:*:*:*:*
2.1.12CPE matchmatch criteria
cpe:2.3:a:freeradius:freeradius:2.1.12:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

6.8MEDIUM

AV:N/AC:M/Au:N/C:P/I:P/A:P

Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Exploitability Score
8.6
Impact Score
6.4
CvssVersion
2.0

Exploit Intelligence

EPSS Score
5.70%
Probability of exploitation in next 30 days
EPSS Percentile
92.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0570 is in the 91st percentile among its peer group of 19,955 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.2 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 Enterprise Linux 5Fixed in: freeradius2-0:2.1.12-4.el5_8
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: freeradius-0:2.1.12-4.el6_3
View patch

Vendor Advisories (1)

redhatCVE-2012-3547Moderate

freeradius: stack-based buffer overflow via long expiration date fields in client X509 certificates

Sep 10, 2012

References

archives.neohapsis.com / archives/bugtraq/2012-09/0043.html
freeradius.org / security.html
Vendor Advisory
lists.apple.com / archives/security-announce/2013/Oct/msg00006.html
lists.fedoraproject.org / pipermail/package-announce/2012-October/090171.html
lists.opensuse.org / opensuse-security-announce/2012-09/msg00023.html
osvdb.org / 85325
rhn.redhat.com / errata/RHSA-2012-1326.html
rhn.redhat.com / errata/RHSA-2012-1327.html
secunia.com / advisories/50484
Vendor Advisory
secunia.com / advisories/50584
Vendor Advisory
secunia.com / advisories/50637
secunia.com / advisories/50770
exchange.xforce.ibmcloud.com / vulnerabilities/78408
debian.org / security/2012/dsa-2546
mandriva.com / security/advisories
openwall.com / lists/oss-security/2012/09/10/2
pre-cert.de / advisories/PRE-SA-2012-06.txt
securityfocus.com / bid/55483
securitytracker.com / id
ubuntu.com / usn/USN-1585-1