CVE-2026-88091
HighCVSS 7.8Exploitation Probability (EPSS)
High risk82th percentile - higher than 82% of all known CVEs
Summary
Deserialization of untrusted data vulnerability in Windows Management Instrumentation. An authorized attacker can elevate privileges locally.
Risk Assessment
An attacker with valid credentials can exploit the deserialization of untrusted data to escalate local privileges, potentially leading to arbitrary code execution.
Recommendation
Apply the latest Microsoft security updates for Windows and restrict local access to trusted users.
Other vulnerabilities in Windows Management Instrumentation
See all- CVE-2026-96856High
Heap-based buffer overflow in Windows Management Instrumentation allows an authorized attacker to elevate privileges locally.
- CVE-2026-96851Medium
Buffer over-read in Windows Management Instrumentation allows an authorized attacker to disclose information locally.
- CVE-2026-85852Medium
An out-of-bounds read in Windows Management Instrumentation allows an authorized attacker to disclose information locally.
- CVE-2026-85362High
Release of invalid pointer or reference in Windows Management Instrumentation allows an authorized attacker to elevate privileges locally.
- CVE-2026-83783High
A heap-based buffer overflow in Windows Management Instrumentation allows an authorized attacker to elevate privileges locally.
- CVE-2026-83724High
Heap-based buffer overflow in Windows Management Instrumentation allows an authorized attacker to elevate privileges locally.
- CVE-2026-77905High
Use after free in Windows Management Instrumentation allows an authorized attacker to elevate privileges locally.
- CVE-2026-70582Medium
Race condition in Windows Management Instrumentation allows an authorized attacker to elevate privileges locally.
- CVE-2026-69451High
Use after free in Windows Management Instrumentation allows an authorized attacker to elevate privileges over a network.
- CVE-2026-69349Medium
A use of uninitialized resource vulnerability in Windows Management Instrumentation allows an authorized attacker to disclose information over a network.
Original NVD description (English source)
Deserialization of untrusted data in Windows Management Instrumentation allows an authorized attacker to elevate privileges locally.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS