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Vulnerabilities

Vulnerability · CVE-2026-32952

go-ntlmssp is a Go package that provides NTLM/Negotiate authentication over HTTP.

Published Apr 24, 2026 · catalog updated Jun 17, 2026 · go-ntlmssp is a Go

Check if you run it

No confirmed exploitation is on record for CVE-2026-32952. EPSS is 1.47%. Act only if a listed version of go-ntlmssp is a Go is installed.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (go-ntlmssp is a Go).
  • 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
1.47%
Remediation
Advisory link
Affected products
cpe microsoft/go-ntlmssp

go-ntlmssp is a Go package that provides NTLM/Negotiate authentication over HTTP. Prior to version 0.1.1, a malicious NTLM challenge message can causes an slice out of bounds panic, which can crash any Go process using as an HTTP transport. Version 0.1.1 patches the issue.

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 microsoft/go-ntlmsspversion unspecified

How to fix CVE-2026-32952

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-2026-32952. EPSS is 1.47%. Act only if a listed version of go-ntlmssp is a Go 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-190: Integer Overflow. EPSS 1.47%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

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

Timeline

Detection, updates, and resolution for this record.

  1. Apr 24, 2026 · NIST NVD

    Detected

    go-ntlmssp is a Go package that provides NTLM/Negotiate authentication over HTTP. Prior to version 0.1.1, a malicious NTLM challenge message can causes an slice out of bounds panic, which can crash any Go process using as an HTTP transport. Version 0.1.1 patches the issue.

  2. Jun 17, 2026 · NIST NVD

    Updated

    go-ntlmssp is a Go package that provides NTLM/Negotiate authentication over HTTP. Prior to version 0.1.1, a malicious NTLM challenge message can causes an slice out of bounds panic, which can crash any Go process using as an HTTP transport. Version 0.1.1 patches the issue.

Sources

  • CVE.orgVulnerability recordCVE-2026-32952

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2026-32952

    30-day exploitation probability 1.5%

    first.org
  • NIST NVDVulnerability recordCVE-2026-32952

    go-ntlmssp is a Go package that provides NTLM/Negotiate authentication over HTTP. Prior to version 0.1.1, a malicious NTLM challenge message can causes an slice out of bounds panic, which can crash any Go process using as an HTTP transport. Version 0.1.1 patc

    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.