CVE-2026-58644

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

CVSS v3.1

9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS

15.87% chance of exploitation in the next 30 days, 97th percentile

CISA KEV

added 2026-07-16

Nuclei

critical · CWE-502

Published

2026-07-14

Updated

2026-08-31

Nuclei templates (1)

• projectdiscovery/nuclei-templates/blob/main/http/cves/2026/CVE-2026-58644.yaml

References

• CVE Record
• NVD entry

Related

• CVE-2026-58635
• CVE-2026-5865
• CVE-2026-58593
• CVE-2026-58658
• CVE-2026-58592
• CVE-2026-58659