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Vulnerabilities

Vulnerability · CVE-2026-39836

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

Published May 7, 2026 · catalog updated Jun 17, 2026 · The Dial and LookupPort

Check if you run it

No confirmed exploitation is on record for CVE-2026-39836. EPSS is 0.62%. Act only if a listed version of The Dial and LookupPort is installed.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (The Dial and LookupPort).
  • No version range is stored. A customer cannot check an installed version against this record.
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
High7.5
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.62%
Remediation
Advisory link
Affected products
cpe golang/go

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

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • cpe golang/goversion unspecified

How to fix CVE-2026-39836

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2026-39836. EPSS is 0.62%. Act only if a listed version of The Dial and LookupPort is installed.

Which versions are affected?

Affected version ranges are not on this record. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-476: NULL Pointer Dereference. EPSS 0.62%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Technology hubs

Windows security

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. May 7, 2026 · NIST NVD

    Detected

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

  2. Jun 17, 2026 · NIST NVD

    Updated

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

Sources

  • CVE.orgVulnerability recordCVE-2026-39836

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2026-39836

    30-day exploitation probability 0.6%

    first.org
  • NIST NVDVulnerability recordCVE-2026-39836

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

    nvd.nist.gov

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.