Nov 2026: Windows Update Stack Information Disclosure Vulnerability
CVE-2026-122162 Published on November 10, 2026
Windows Update Stack Information Disclosure Vulnerability
Integer underflow (wrap or wraparound) in Windows Update Stack allows an authorized attacker to disclose information locally.
Vulnerability Analysis
Weakness Types
What is an Integer underflow Vulnerability?
The product subtracts one value from another, such that the result is less than the minimum allowable integer value, which produces a value that is not equal to the correct result. This can happen in signed and unsigned cases.
CVE-2026-122162 has been classified to as an Integer underflow vulnerability or weakness.
Out-of-bounds Read
The software reads data past the end, or before the beginning, of the intended buffer. Typically, this can allow attackers to read sensitive information from other memory locations or cause a crash. A crash can occur when the code reads a variable amount of data and assumes that a sentinel exists to stop the read operation, such as a NUL in a string. The expected sentinel might not be located in the out-of-bounds memory, causing excessive data to be read, leading to a segmentation fault or a buffer overflow. The software may modify an index or perform pointer arithmetic that references a memory location that is outside of the boundaries of the buffer. A subsequent read operation then produces undefined or unexpected results.
Products Associated with CVE-2026-122162
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Affected Versions
Microsoft Windows 11 Version 24H2:- Version 10.0.26100.0 and below 10.0.26100.9974 is affected.
- Version 10.0.26200.0 and below 10.0.26200.9974 is affected.
- Version 10.0.28000.0 and below 10.0.28000.3501 is affected.
- Version 10.0.26300.0 and below 10.0.26300.9974 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.