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CVE-2012-4528

33
FAUCET Score

CVE-2012-4528 is a security bypass vulnerability in the mod_security2 module for Apache HTTP Server, affecting various Fedora and openSUSE distributions. It allows remote attackers to bypass security rules and deliver arbitrary POST data to PHP applications by crafting a multipart request with an invalid part preceding the malicious data. With a CVSS score of 5.0, this vulnerability has a low attack complexity and requires no authentication, potentially leading to unauthorized data manipulation (integrity impact). While not actively exploited in the wild and lacking Metasploit/Nuclei modules, an ExploitDB entry (EDB-37949) exists, indicating proof-of-concept code availability, though community discussion and media coverage are minimal.

Impacted Technologies

VendorProductVersion(s)CPE
< 2.7.0CPE matchmatch criteria
cpe:2.3:a:trustwave:modsecurity:*:*:*:*:*:*:*:*
11.4CPE matchmatch criteria
cpe:2.3:o:opensuse:opensuse:11.4:*:*:*:*:*:*:*
12.2CPE matchmatch criteria
cpe:2.3:o:opensuse:opensuse:12.2:*:*:*:*:*:*:*
12.3CPE matchmatch criteria
cpe:2.3:o:opensuse:opensuse:12.3:*:*:*:*:*:*:*
18CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:18:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

5.0MEDIUM

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

Confidentiality Impact
NONE
Integrity Impact
PARTIAL
Availability Impact
NONE
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
2.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
12.51%
Probability of exploitation in next 30 days
EPSS Percentile
95.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
ExploitDB: EDB-37949 · Oct 17, 2012
This CVE's current EPSS score of 0.1251 is in the 95th percentile among its peer group of 23,690 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.4 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

Remediation records are not available for this CVE.

References

lists.fedoraproject.org / pipermail/package-announce/2012-November/093011.html
Third Party Advisory
lists.opensuse.org / opensuse-updates/2013-08/msg00020.html
Mailing ListThird Party Advisory
lists.opensuse.org / opensuse-updates/2013-08/msg00025.html
Mailing ListThird Party Advisory
lists.opensuse.org / opensuse-updates/2013-08/msg00031.html
Mailing ListThird Party Advisory
mod-security.svn.sourceforge.net / viewvc/mod-security/m2/branches/2.7.x/CHANGES
Broken Link
mod-security.svn.sourceforge.net / viewvc/mod-security/m2/trunk/apache2/msc_multipart.c
Broken Link
mod-security.svn.sourceforge.net / viewvc/mod-security
Broken Link
seclists.org / fulldisclosure/2012/Oct/113
ExploitMailing ListThird Party Advisory
sec-consult.com / fxdata/seccons/prod/temedia/advisories_txt/20121017-0_mod_security_ruleset_bypass.txt
Third Party Advisory
openwall.com / lists/oss-security/2012/10/18/14
Mailing ListThird Party Advisory