CVE-2026-50522
CRITICALCVSS v3
9.8
CRITICAL
EPSS Score
19.7%
exploit probability
CISA KEV
No
known exploited
Exploitation
—
SSVC status
Description
Deserialization of untrusted data in Microsoft Office SharePoint allows an unauthorized attacker to execute code over a network.
Technical Details
- CVSS v3 Vector
- 3.1
- Published
- 7/14/2026
- Last Modified
- 7/15/2026
Frequently Asked Questions
What is CVE-2026-50522?
Deserialization of untrusted data in Microsoft Office SharePoint allows an unauthorized attacker to execute code over a network.
Is CVE-2026-50522 actively exploited?
Active exploitation of CVE-2026-50522 has not been confirmed. The EPSS score is 19.7%, indicating the estimated probability of exploitation in the next 30 days.
What is the CVSS score for CVE-2026-50522?
CVE-2026-50522 has a CVSS v3 base score of 9.8 (CRITICAL severity), with vector string 3.1.
Is CVE-2026-50522 affecting your environment?
Use isMalicious to check if any of your IPs or domains are associated with this vulnerability's IOCs.