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CVE-2012-3406

23
FAUCET Score

CVE-2012-3406 describes a vulnerability in the vfprintf function of GNU C Library (glibc) versions 2.5 and 2.12, affecting products from Canonical, GNU, and Red Hat. This flaw allows attackers to bypass FORTIFY_SOURCE protections and potentially cause a denial of service or execute arbitrary code through crafted format strings. With a CVSS score of 6.8, this vulnerability has a medium attack complexity and can lead to partial confidentiality, integrity, and availability impacts. 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
2.5CPE matchmatch criteria
cpe:2.3:a:gnu:glibc:2.5:*:*:*:*:*:*:*
2.12CPE matchmatch criteria
cpe:2.3:a:gnu:glibc:2.12:*:*:*:*:*:*:*
3.0CPE matchmatch criteria
cpe:2.3:a:redhat:enterprise_virtualization:3.0:*:*:*:*:*:*:*
8.04CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:8.04:-:lts:*:*:*:*:*
10.04CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:10.04:-:lts:*:*:*:*:*

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
3.16%
Probability of exploitation in next 30 days
EPSS Percentile
86.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
This CVE's current EPSS score of 0.0316 is in the 80th percentile among its peer group of 19,953 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 (3)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: glibc-0:2.5-81.el5_8.4
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: glibc-0:2.12-1.80.el6_3.3
View patch
redhatpatch availablevia redhat_api
Product: RHEV 3.X Hypervisor and Agents for RHEL-6Fixed in: rhev-hypervisor6-0:6.3-20120815.0.el6_3
View patch

Vendor Advisories (1)

redhatCVE-2012-3406Moderate

glibc: printf() unbound alloca() usage in case of positional parameters + many format specs

Jul 11, 2012

References

rhn.redhat.com / errata/RHSA-2012-1097.html
rhn.redhat.com / errata/RHSA-2012-1098.html
rhn.redhat.com / errata/RHSA-2012-1185.html
rhn.redhat.com / errata/RHSA-2012-1200.html
bugzilla.redhat.com / attachment.cgi
bugzilla.redhat.com / show_bug.cgi
security.gentoo.org / glsa/201503-04
openwall.com / lists/oss-security/2012/07/11/17
ubuntu.com / usn/USN-1589-1