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Vulnerabilities

Vulnerability · CVE-2018-8580

Microsoft SharePoint Exposure of Sensitive Information to an Unauthorized Actor

Published Jan 21, 2021 · catalog updated Jan 21, 2021 · Microsoft SharePoint

Patch now

CVE-2018-8580 is in the CISA known-exploited catalog. Confirm Microsoft SharePoint against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Gaps on this record

  • No version range is stored. A customer cannot check an installed version against this record.
Severity
Unknown—
Known exploitation
CISA KEV and VulnCheck KEV
EPSS
4.42%
Remediation
Remediation guidance
Affected products
vendor Microsoft SharePoint

An information disclosure vulnerability exists where certain modes of the search function in Microsoft SharePoint Server are vulnerable to cross-site search attacks (a variant of cross-site request forgery, CSRF), aka "Microsoft SharePoint Information Disclosure Vulnerability." This affects Microsoft SharePoint.

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 Microsoft SharePointversion unspecified

How to fix CVE-2018-8580

What to do

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

Should you patch?

CVE-2018-8580 is in the CISA known-exploited catalog. Confirm Microsoft SharePoint against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Which versions are affected?

Affected version ranges are not on this record. Apply remediations or mitigations per vendor instructions or discontinue use of the product if remediation or mitigations are unavailable.

What should an analyst verify?

No weakness class is stored. EPSS 4.42%. The CISA KEV listing is the exploitation evidence. 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. Jan 21, 2021 · VulnCheck KEV

    Detected

    An information disclosure vulnerability exists where certain modes of the search function in Microsoft SharePoint Server are vulnerable to cross-site search attacks (a variant of cross-site request forgery, CSRF), aka "Microsoft SharePoint Information Disclosure Vulnerability." This affects Microsoft SharePoint.

  2. Jan 21, 2021 · CISA KEV

    Known exploited

    Apply remediations or mitigations per vendor instructions or discontinue use of the product if remediation or mitigations are unavailable.

Sources

  • CVE.orgVulnerability recordCVE-2018-8580

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2018-8580

    30-day exploitation probability 4.4%

    first.org
  • VulnCheck KEVConfirmed exploitationCVE-2018-8580

    An information disclosure vulnerability exists where certain modes of the search function in Microsoft SharePoint Server are vulnerable to cross-site search attacks (a variant of cross-site request forgery, CSRF), aka "Microsoft SharePoint Information Disclosure Vulnerability." T

    vulncheck.com

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.