Threats / Microsoft / CVE-2015-2360
CVE-2015-2360
· EUVD no mirror located
· GCVE no mirror located
Verified 2026-06-22
Microsoft Win32k vulnerability
Win32k.sys kernel-mode driver in Microsoft Windows contains a buffer overflow vulnerability allowing local users to escalate privileges or trigger denial-of-service conditions.
Verdict
Today item — known-exploited.
A local privilege escalation and denial-of-service vulnerability in Win32k.sys affecting Microsoft Windows. The vulnerability has been exploited in the wild with moderate exploit probability. Local access is required to trigger the flaw.
01
Is it exploitable?
— the evidence, ranked above the scoreReported exploitation
4 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 2022-05-25).
Probability (EPSS)
EPSS 0.14958 — 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 execute code with standard user privileges on a target Windows system.
Business
An attacker gains a foothold on the system through initial compromise or social engineering.
2
Keys to the kingdom — privilege/identity takeover narrative 2
Attacker
I trigger the buffer overflow in Win32k.sys through a crafted system call or graphics operation.
Business
The vulnerability is reachable from unprivileged context, enabling exploitation without special conditions.
3
Lateral reach — past segmentation narrative 3
Attacker
I escalate my privileges to SYSTEM or kernel level by exploiting the memory corruption flaw.
Business
The attacker gains administrative control over the compromised system.
4
Data at risk — exfiltration narrative 4
Attacker
I maintain persistence and lateral movement capabilities with elevated privileges.
Business
The organization loses control of the affected endpoint and faces risk of data exfiltration or further network compromise.
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