CVE-2026-39836

Panic in Dial and LookupPort when handling NUL byte on Windows in net

Published May 7, 2026 CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed
Description
The Dial and LookupPort functions panic on Windows when provided with an input containing a NUL (0).

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
First Time appeared Golang
Golang go
Weaknesses CWE-476
CPEs cpe:2.3:a:golang:go:*:*:*:*:*:*:*:*
Vendors & Products Golang
Golang go
Type Values Removed Values Added
First Time appeared Go Standard Library
Go Standard Library net
Vendors & Products Go Standard Library
Go Standard Library net
Type Values Removed Values Added
Weaknesses CWE-20
Type Values Removed Values Added
Weaknesses CWE-20
Type Values Removed Values Added
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'}

ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Weaknesses CWE-20
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
Weaknesses

Sources

Status
PUBLISHED
Assigner
Go
Published
Updated
May 8, 2026, 9:30 PM
Reserved
Apr 7, 2026, 6:13 PM
Status
Analyzed
Published
May 7, 2026, 8:16 PM
Modified
Oct 26, 2026, 8:10 PM