CVE-2025-53770
- Source
- https://cve.org/CVERecord?id=CVE-2025-53770
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-53770.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2025-53770
- Published
- 2025-07-20T01:15:30.777Z
- Modified
- 2026-03-15T22:51:11.518042Z
- Severity
-
- 9.8 (Critical) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
- Summary
- [none]
- Details
-
Deserialization of untrusted data in on-premises Microsoft SharePoint Server allows an unauthorized attacker to execute code over a network. Microsoft is aware that an exploit for CVE-2025-53770 exists in the wild. Microsoft is preparing and fully testing a comprehensive update to address this vulnerability. In the meantime, please make sure that the mitigation provided in this CVE documentation is in place so that you are protected from exploitation.
- References
-
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-53770
- https://therecord.media/microsoft-sharepoint-zero-day-vulnerability-exploited-globally
- https://www.darkreading.com/remote-workforce/microsoft-rushes-emergency-fix-exploited-sharepoint-toolshell-flaw
- https://www.bleepingcomputer.com/news/microsoft/microsoft-sharepoint-zero-day-exploited-in-rce-attacks-no-patch-available/
- https://www.forbes.com/sites/daveywinder/2025/07/20/microsoft-confirms-ongoing-mass-sharepoint-attack---no-patch-available/
- https://x.com/Shadowserver/status/1946900837306868163
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-53770
- https://msrc.microsoft.com/blog/2025/07/customer-guidance-for-sharepoint-vulnerability-cve-2025-53770/
- https://www.cisa.gov/news-events/alerts/2025/07/20/microsoft-releases-guidance-exploitation-sharepoint-vulnerability-cve-2025-53770
- https://news.ycombinator.com/item?id=44629710
- https://arstechnica.com/security/2025/07/sharepoint-vulnerability-with-9-8-severity-rating-is-under-exploit-across-the-globe/
- https://github.com/kaizensecurity/CVE-2025-53770
- https://research.eye.security/sharepoint-under-siege/
Affected packages
Git /
Database specific
unresolved_ranges
[
{
"events": [
{
"introduced": "0"
},
{
"fixed": "16.0.18526.20508"
}
]
},
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "2016"
}
]
},
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "2019"
}
]
}
]
source
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-53770.json"