Threats / Microsoft / CVE-2013-3660
CVE-2013-3660
· EUVD no mirror located
· GCVE no mirror located
Verified 2026-06-22
Microsoft Win32k vulnerability
A pointer initialization flaw in Win32k's EPATHOBJ::pprFlattenRec function allows local users to escalate privileges through improper list object handling.
Verdict
Today item — known-exploited.
Local privilege escalation vulnerability in Windows kernel-mode driver. Uninitialized pointer in graphics path object flattening enables attackers with local access to execute arbitrary code with elevated privileges.
01
Is it exploitable?
— the evidence, ranked above the scoreReported exploitation
6 independent public reports of in-the-wild exploitation are cataloged.Distinct reporting sources (vendor, incident response, government); open them for the underlying claims.
Exploited in the wild
Listed in the CISA Known Exploited Vulnerabilities catalog (added 2022-03-28).
Probability (EPSS)
EPSS 0.39578 — modeled likelihood of exploitation activity.EPSS is a daily-changing model output — open the source for today's value.
Severity / affected
Affected: Microsoft, Win32k. Confirm exact fixed builds in the vendor advisory.
Weakness (CWE)
Mapped to CWE-119 Memory Buffer Bounds Error — weakness family: Memory safety.CWE assignment from the public NVD record; the weakness class drives how the flaw is exploited.
02
Who’s exploiting it?
— attribution turns risk into urgencyAttribution not established
No confirmed (advisory-backed) threat-actor attribution is established for this record. Absence of a named actor is not absence of compromise — see Coverage & confidence.
03
Why it matters
— the attack path, told twice: adversary, then board1
Front door — unauthenticated access narrative 1
Attacker
I craft a malicious local application that triggers the vulnerable code path in Win32k to manipulate the uninitialized pointer.
Business
Attacker gains kernel-level code execution, compromising system integrity and enabling data theft or further lateral movement.
2
Keys to the kingdom — privilege/identity takeover narrative 2
Attacker
I exploit the pointer flaw to read or write kernel memory, bypassing security boundaries and access controls.
Business
Complete system compromise with attacker operating at highest privilege level, defeating all user-mode security mechanisms.
04
What to do
— defensible action- Remediate per the vendor advisory — confirm the fixed build for your version and verify exposure.1
Say it to the boardA vulnerability with this evidence profile is a defensible budget line, not a backlog ticket — fund the change against the proof above.
05