The Dial and LookupPort functions panic on Windows when provided with an input containing a NUL (0).

No CVSS v4.0

No CVSS v3.1

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
Go standard library net unaffected
Version Status Constraints
0 affected < 1.25.10
1.26.0-0 affected < 1.26.3

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Advisories

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Fixes

Solution

No solution given by the vendor.

Workaround

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References
Link Providers
https://go.dev/cl/775320 cve-icon cve-icon
https://go.dev/issue/79006 cve-icon cve-icon
https://groups.google.com/g/golang-announce/c/qcCIEXso47M cve-icon cve-icon
https://pkg.go.dev/vuln/GO-2026-4971 cve-icon cve-icon
History

Thu, 07 May 2026 21:45:00 +0000

Type Values Removed Values Added
Weaknesses CWE-20

Thu, 07 May 2026 20:00:00 +0000

Type Values Removed Values Added
Description The Dial and LookupPort functions panic on Windows when provided with an input containing a NUL (0).
Title Panic in Dial and LookupPort when handling NUL byte on Windows in net
References

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: Go

Published:

Updated: 2026-05-07T19:41:18.300Z

Reserved: 2026-04-07T18:13:03.529Z

Link: CVE-2026-39836

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-05-07T20:16:43.593

Modified: 2026-05-07T20:38:04.860

Link: CVE-2026-39836

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-05-07T21:30:25Z

Weaknesses