ReviewHigh

CVE-2026-70326

Microsoft Microsoft SharePoint Server Subscription Edition, sharepoint server

Server-side request forgery (ssrf) in Microsoft Office SharePoint allows an authorized attacker to elevate privileges over a network.

CVSS
8.8
EPSS
-
- percentile
CISA KEV
Not listed
Published
2026.08.12
PRIORITY ASSESSMENT

Review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV
Exploit probability-
Technical severityCVSS 8.8

Vulnerability overview

Server-side request forgery (ssrf) in Microsoft Office SharePoint allows an authorized attacker to elevate privileges over a network.

Affected product and versions

Product
Microsoft Microsoft SharePoint Server Subscription Edition, sharepoint server
Affected versions
>= 16.0.0 < 16.0.19725.20522
Fixed versions
Verify the fixed release separately for each affected product line

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide
  1. 1
    Identify

    Confirm that Microsoft Microsoft SharePoint Server Subscription Edition, sharepoint server and an affected version are present.

  2. 2
    Prioritize

    Combine exploitation signals with asset exposure and business criticality.

  3. 3
    Remediate

    Follow the vendor advisory or supported update path and preserve rollback options.

  4. 4
    Verify

    Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE
CWE-918
CVE-2026-70326 — Microsoft Microsoft SharePoint Server Subscription Edition, sharepoint server | SECUFOCUS NOW