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CVE-2013-3660

91
FAUCET Score

CVE-2013-3660 is a local privilege escalation vulnerability in the win32k.sys kernel-mode driver affecting various Microsoft Windows versions, including XP, Vista, 7, 8, and Server editions. It allows a local attacker to gain elevated privileges by exploiting an uninitialized pointer in the EPATHOBJ::pprFlattenRec function, leading to write access to the PATHRECORD chain. This vulnerability has a CVSS score of 7.8 (HIGH) due to its low attack complexity and high impact on confidentiality, integrity, and availability. It is actively exploited in the wild, with public exploit code available, including a Metasploit module, and has garnered significant community discussion and media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:o:microsoft:windows_7:-:sp1:*:*:*:*:*:*
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:o:microsoft:windows_8:-:*:*:*:*:*:*:*
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:o:microsoft:windows_rt:-:*:*:*:*:*:*:*
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:o:microsoft:windows_server_2003:-:sp2:*:*:*:*:*:*
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:o:microsoft:windows_server_2008:-:sp2:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.8HIGH

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
39.58%
Probability of exploitation in next 30 days
EPSS Percentile
98.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
Added to KEV · Mar 28, 2022
Metasploit: Windows EPATHOBJ::pprFlattenRec Local Privilege Escalation · May 15, 2013
ExploitDB: EDB-26554 · Jul 2, 2013
This CVE's current EPSS score of 0.3958 is in the 99th percentile among its peer group of 11,621 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.2 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

cisa.gov / known-exploited-vulnerabilities-catalog
US Government Resource
archives.neohapsis.com / archives/fulldisclosure/2013-05/0090.html
Broken Link
archives.neohapsis.com / archives/fulldisclosure/2013-05/0094.html
Broken Link
archives.neohapsis.com / archives/fulldisclosure/2013-06/0006.html
Broken Link
docs.microsoft.com / en-us/security-updates/securitybulletins/2013/ms13-053
PatchVendor Advisory
secunia.com / advisories/53435
Broken LinkVendor Advisory
oval.cisecurity.org / repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A17360
Broken Link
twitter.com / taviso/statuses/309157606247768064
Exploit
twitter.com / taviso/statuses/335557286657400832
Not Applicable
computerworld.com / s/article/9239477
Broken Link
exploit-db.com / exploits/25611
ExploitThird Party AdvisoryVDB Entry
osvdb.org / 93539
Broken Link
reddit.com / r/netsec/comments/1eqh66/0day_windows_kernel_epathobj_vulnerability
ExploitIssue Tracking
theverge.com / 2013/5/23/4358400/google-engineer-bashes-microsoft-discloses-windows-flaw
Press/Media Coverage
us-cert.gov / ncas/alerts/TA13-190A
Third Party AdvisoryUS Government Resource