# CVE-2026-109502

Authenticated SSRF in Microsoft SharePoint enabling network privilege escalation.

- Page: https://www.vulneraibility.com/cve/CVE-2026-109502
- CVSS: 8.8
- Known exploited: not in CISA KEV as of our last sync
- EPSS: 0.80% (percentile 56.9)
- CISA SSVC: exploitation none, automatable no, technical impact total (assessed 2026-11-10)
- Weakness: CWE-918
- Published: 2026-11-10

## Affected versions

- Microsoft Microsoft SharePoint Server Subscription Edition: affected >= 16.0.0 and < 16.0.20326.20278

A version outside these ranges is not a statement that it is unaffected.

## Impact

Authenticated SSRF allows attackers to make internal requests, escalate privileges across the network, enabling lateral movement and data access.

## Action

Patch when possible

## Recommendation

Apply Microsoft security update immediately

## References

- [patch] https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-109502

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Summary, impact and action are written by the vulneraibility.com AI analysis pipeline from the CVE record, NVD, CISA and FIRST data; verify against the references.