Nov 2026: Windows SMB Remote Code Execution Vulnerability
CVE-2026-119988 Published on November 10, 2026
Windows SMB Remote Code Execution Vulnerability
Numeric truncation error in Windows SMB allows an authorized attacker to execute code over a network.
Vulnerability Analysis
Weakness Type
Numeric Truncation Error
Truncation errors occur when a primitive is cast to a primitive of a smaller size and data is lost in the conversion. When a primitive is cast to a smaller primitive, the high order bits of the large value are lost in the conversion, potentially resulting in an unexpected value that is not equal to the original value. This value may be required as an index into a buffer, a loop iterator, or simply necessary state data. In any case, the value cannot be trusted and the system will be in an undefined state. While this method may be employed viably to isolate the low bits of a value, this usage is rare, and truncation usually implies that an implementation error has occurred.
Products Associated with CVE-2026-119988
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