Vendor
Sitecore: actively exploited vulnerabilities
4 vulnerabilities in Sitecore products are listed in CISA’s catalog of actively exploited vulnerabilities, 1 of them used by ransomware. Latest addition on September 4, 2025: CVE-2025-53690 (Multiple Products).
- 4 exploited vulnerabilities in the catalog
- 0 added in the last 12 months
- 1 used by ransomware
- 3 products affected
Affected products
- CMS and Experience Platform (XP)2
- Multiple Products1
- XP1
All exploited vulnerabilities
CISA KEV catalog, newest first: each entry corresponds to observed exploitation.
2025 3 vulnerabilities
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CVE-2025-53690Sitecore Multiple Products Deserialization of Untrusted Data Vulnerability
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CVE-2019-9875Sitecore CMS and Experience Platform (XP) Deserialization Vulnerability
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CVE-2019-9874Sitecore CMS and Experience Platform (XP) Deserialization Vulnerability
2022 1 vulnerability
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CVE-2021-42237Used by ransomwareSitecore XP Remote Command Execution Vulnerability
What to do
If your estate includes any of these products, make sure the vendor’s patches are applied, starting with the most recent vulnerabilities and those used by ransomware, then look for signs of compromise: an exploited vulnerability has often been used before it was fixed.
Additions from all vendors are tracked on the Actively exploited vulnerabilities page, updated several times a day. Sources: CISA KEV catalog (US public domain) and CERT-FR.