by Kastro
Paper/Archive/CVE-2026-58644

CVE-2026-58644

Microsoft Microsoft SharePoint Enterprise Server 2016 — Microsoft SharePoint Remote Code Execution Vulnerability

KEV · due 19 JulEPSS 16%public exploitSSVC actCVSS 9.8
critical.is priorityof 100
99
CVSS 9.8 (CNA)9.8 / 10 × 3029.4In CISA KEV+3030.0EPSS percentile 96.9.969 × 2019.4Exploit: SSVC active+1010.0SSVC exploitation: active+1010.0
Description · from the CVE record

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

Affected

ProductAffectedFixed inSource
Microsoft SharePoint Enterprise Server 201616.0.0 – < 16.0.5556.100516.0.5556.1005CNA
Microsoft SharePoint Server 201916.0.0 – < 16.0.10417.2015316.0.10417.20153CNA
Microsoft SharePoint Server Subscription Edition16.0.0 – < 16.0.19725.2038416.0.19725.20384CNA

Scores by source

microsoft (CNA)9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:F/RL:O/RC:C
CISA ADPSSVCExploitation: active · Automatable: yes · Technical impact: total

References

patchmsrc.microsoft.com/update-guide/vulnerability/CVE-2026-58644refcisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-58644kevcisa.gov/known-exploited-vulnerabilities-catalog