CVE-2026-70324: Microsoft SharePoint Elevation of Privilege Vulnerability

highCVSS 8.8CVE-2026-70324

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

CSIRTS triage

vendor: Microsoft product: SharePoint Server-side request forgery Privilege escalation

What: Server-side request forgery in SharePoint allows an authorized attacker to elevate privileges over the network.
Who is affected: SharePoint deployments where authorized users can trigger SSRF conditions.
Urgency: High priority; CVSS 8.8 and privilege escalation capability warrant urgent patching.
Action: Apply Microsoft security updates for SharePoint immediately.

AI-assisted analysis generated from the source advisory — verify against the original.

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Details

Source: Microsoft Security Response Center (INTL · vendor-psirt · site)
Severity: high — CVSS 8.8
Published: 2026-08-11
Exploitation: Not in CISA KEV at last sync

Original advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-70324

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Low exploitation riskCVE-2026-703240.58% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 45% of all EPSS-scored CVEs.

Referenced CVEs

CVE	CSIRTS overview	External
CVE-2026-70324	coverage & exploitation status	NVD · CVE.org

Same CVEs, other sources

How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.

Recent advisories for Microsoft SharePoint Elevation

A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.

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highCVE-2026-70326: Server-side request forgery (ssrf) in Microsoft Office SharePoint allows an authorized attacke…nvd · 2026-08-11
highCVE-2026-70324: Server-side request forgery (ssrf) in Microsoft Office SharePoint allows an authorized attacke…nvd · 2026-08-11
highCVE-2026-64921: Missing authentication for critical function in Microsoft Office SharePoint allows an authoriz…nvd · 2026-08-11
highCVE-2026-62827: Improper authentication in Microsoft Office SharePoint allows an authorized attacker to elevat…nvd · 2026-08-11
highCVE-2026-70326: Microsoft SharePoint Server Elevation of Privilege Vulnerabilitymsrc · 2026-08-11