VulnerabilityAwaiting Analysis

CVE-2026-39824

NewNTUnicodeString does not check for string length overflow.

LOW 3.3EPSS 0.11%

Does this matter?

Lower severity and a low EPSS score (0.11%). Track it; it rarely justifies an emergency change on its own.

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.

CVSS 3.1: 3.3 LOWCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
EPSS: 0.11% probability · 2th percentile
CISA KEV: Not listed
Weakness: CWE-190
Source: security@golang.org

References

https://go.dev/cl/770080
https://go.dev/issue/78916
https://groups.google.com/g/golang-announce/c/6MMI8Lj-Atg
https://pkg.go.dev/vuln/GO-2026-5024

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.