CVE-2026-39824

LOW

Invoking integer overflow in NewNTUnicodeString in golang.org/x/sys/windows

Title source: cna

Description

NewNTUnicodeString does not check for string length overflow. When provided with a string that overflows the maximum size of a NTUnicodeString (a 16-bit number of bytes), it returns a truncated string rather than an error.

References (4)

Core 4

Core References

https://go.dev/issue/78916

https://go.dev/cl/770080

https://groups.google.com/g/golang-announce/c/6MMI8Lj-Atg

https://pkg.go.dev/vuln/GO-2026-5024

Scores

CVSS v3 3.3

EPSS 0.0014

EPSS Percentile 4.0%

Attack Vector LOCAL

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

CISA SSVC

Vulnrichment

Exploitation none

Automatable no

Technical Impact partial

Details

CWE

CWE-190

Status published

Products (1)

golang.org/x/sys/golang.org/x/sys/windows < 0.44.0

Published May 22, 2026

Tracked Since May 23, 2026