CVE-2026-50522

As of 2026-07-14, CVE-2026-50522 is a CVSS 9.8 (CRITICAL-severity) vulnerability. Threadlinqs Intelligence tracks 8 threats exploiting it.

Last updated: 2026-07-14

Deserialization of untrusted data in Microsoft Office SharePoint allows an unauthorized attacker to execute code over a network.

CVSS v3 vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C

Weaknesses (CWE)

CWE-502

Threats tracking this CVE

• July 2026 Patch Tuesday: Actively Exploited SharePoint RCE (CVE-2026-58644) and AD FS/SharePoint Zero-Days — CRITICAL
• CISA Warns of Trio of Actively Exploited SharePoint Server Flaws (CVE-2026-32201, CVE-2026-45659, CVE-2026-56164) — CRITICAL
• Actively Exploited SharePoint Server Elevation of Privilege Flaw (CVE-2026-56164) Patched Alongside Critical RCE Pair in July 2026 Patch Tuesday — CRITICAL
• Microsoft July 2026 Patch Tuesday: Two Actively Exploited Zero-Days in AD FS (CVE-2026-56155) and SharePoint (CVE-2026-56164), Plus Unpatched BitLocker Bypass (CVE-2026-50661) — CRITICAL
• Microsoft July 2026 Patch Tuesday: Two Actively Exploited Zero-Days in AD FS and SharePoint (CVE-2026-56155, CVE-2026-56164) — CRITICAL
• Microsoft July 2026 Patch Tuesday: Record 622 Flaws Fixed, Two Zero-Days Under Active Exploitation (CVE-2026-56164, CVE-2026-56155) — CRITICAL
• Microsoft July 2026 Patch Tuesday: Record 622 CVEs Include Two Actively Exploited Zero-Days in AD FS (CVE-2026-56155) and SharePoint Server (CVE-2026-56164) — CRITICAL
• Microsoft July 2026 Patch Tuesday: 570 Flaws Fixed, 3 Zero-Days Including AD FS and SharePoint Privilege Escalation — CRITICAL

References

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50522

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Enriched from CVE.org, NVD (this product uses the NVD API but is not endorsed or certified by the NVD), FIRST EPSS, CISA KEV, and GitHub Security Advisories.