Nov 2026: Microsoft Trace Data Helper Elevation of Privilege Vulnerability
CVE-2026-121681 Published on November 10, 2026
Microsoft Trace Data Helper Elevation of Privilege Vulnerability
Heap-based buffer overflow in Microsoft Trace Data Helper allows an authorized attacker to elevate privileges locally.
Vulnerability Analysis
Weakness Type
Heap-based Buffer Overflow
A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc().
Products Associated with CVE-2026-121681
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Affected Versions
Microsoft Windows 11 Version 24H2:- Version 10.0.26100.0 and below 10.0.26100.9711 is affected.
- Version 10.0.26200.0 and below 10.0.26200.9711 is affected.
- Version 10.0.28000.0 and below 10.0.28000.3231 is affected.
- Version 10.0.26300.0 and below 10.0.26300.9711 is affected.
- Version 10.0.26100.0 and below 10.0.26100.33822 is affected.
- Version 10.0.26100.0 and below 10.0.26100.33822 is affected.
Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.