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Vulnerabilities

Vulnerability · CVE-2025-58187

Due to the design of the name constraint checking algorithm, the processing time of some inputs scale non-linearly with respect to the size of the certificate.

Published Oct 29, 2025 · catalog updated Nov 20, 2025 · Go standard library

Last checked Oct 31, 2026. A connected source was read within the last 7 days.

Check if you run it

No confirmed exploitation is on record for CVE-2025-58187. EPSS is 0.41%. Act only if a listed version of Go standard library is installed.

Gaps on this record

  • No vendor fix or required action is stored. Compare the linked advisory before you change production.

Same product and reporting

Severity
High7.5
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.41%
Remediation
Version ranges on file
Affected products
vendor Go standard library crypto/x509 1.25.0 <1.25.3

Due to the design of the name constraint checking algorithm, the processing time of some inputs scale non-linearly with respect to the size of the certificate. This affects programs which validate arbitrary certificate chains.

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.

  • vendor Go standard library crypto/x509 1.25.0 <1.25.31.25.0 <1.25.3

How to fix CVE-2025-58187

  • Upgrade

    CVE-2025-58187 lists a fix boundary at 1.25.3. Compare the installed build with that boundary before you change production.

  • Version check

    Seen in 1.25.0 <1.25.3

  • Advisory

    Open the cve_org record and follow its fix.

  • Official advisories

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-2025-58187. EPSS is 0.41%. Act only if a listed version of Go standard library is installed.

Which versions are affected?

Compare what you have installed with Go standard library crypto/x509 1.25.0 <1.25.3 1.25.0 <1.25.3. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS 0.41%. 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.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Oct 29, 2025 · EUVD

    Detected

    Due to the design of the name constraint checking algorithm, the processing time of some inputs scale non-linearly with respect to the size of the certificate. This affects programs which validate arbitrary certificate chains.

  2. Nov 20, 2025 · EUVD

    Updated

    Due to the design of the name constraint checking algorithm, the processing time of some inputs scale non-linearly with respect to the size of the certificate. This affects programs which validate arbitrary certificate chains.

Sources

  • CVE.orgVulnerability recordCVE-2025-58187

    Official CVE identifier

    cve.org
  • EUVDVulnerability recordEUVD-2025-36738

    Due to the design of the name constraint checking algorithm, the processing time of some inputs scale non-linearly with respect to the size of the certificate. This affects programs which validate arbitrary certificate chains.

    euvd.enisa.europa.eu

References

Freshness

Last verified in this catalog Oct 31, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.

  • CVE.orgOct 25, 2026
  • EUVDOct 25, 2026