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

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-39824
StatePUBLISHED
AssignerGo
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-05-22 20:16:33 UTC
Updated2026-05-27 14:16:46 UTC
DescriptionNewNTUnicodeString 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.

Risk And Classification

Primary CVSS: v3.1 3.3 LOW from ADP

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

EPSS: 0.000130000 probability, percentile 0.024140000 (date 2026-05-31)

Problem Types: CWE-190 | CWE-190: Integer Overflow or Wraparound | CWE-190 CWE-190 Integer Overflow or Wraparound

VersionSourceTypeScoreSeverityVector
3.1ADPDECLARED3.3LOWCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
3.1134c704f-9b21-4f2e-91b3-4a467353bcc0Secondary3.3LOWCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

CVSS v3.1 Breakdown

Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
Low
Availability
None

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

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Golang.orgxsys Golang.org/x/sys/windows affected 0.44.0 semver windows

References

ReferenceSourceLinkTags
pkg.go.dev/vuln/GO-2026-5024 [email protected] pkg.go.dev
go.dev/cl/770080 [email protected] go.dev
groups.google.com/g/golang-announce/c/6MMI8Lj-Atg [email protected] groups.google.com
go.dev/issue/78916 [email protected] go.dev
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