Sitecore — known exploited vulnerabilities
The CISA Known Exploited Vulnerabilities catalog (KEV) lists vulnerabilities that CISA has confirmed are being exploited in the wild; U.S. federal civilian agencies are required to remediate each entry by its due date. This page joins the KEV entries for Sitecore with NVD CVSS scores and CISA's ransomware-campaign flag. See our methodology or browse all CVEs.
Key findings
CISA's Known Exploited Vulnerabilities catalog lists 4 Sitecore vulnerabilities confirmed as exploited in the wild across 3 products; 1 of them (25%) is flagged as used in known ransomware campaigns. CMS and Experience Platform (XP) is the most-affected product, with 2 entries (50% of the total). CISA added 3 entries in 2025, compared with 0 in 2024. Across the 4 entries with an NVD CVSS score (100% of the total), the average score is 9.4; 3 entries are rated critical by NVD. The most recent addition is CVE-2025-53690 (Sitecore Multiple Products Deserialization of Untrusted Data Vulnerability), added on 2025-09-04.
Affected products
| Product | Entries | Share |
|---|---|---|
| CMS and Experience Platform (XP) | 2 | 50% |
| Multiple Products | 1 | 25% |
| XP | 1 | 25% |
Entries added per year
By date added to the KEV catalog
Exploited Sitecore vulnerabilities (4)
Newest first. CVSS scores from NVD where available.
| CVE | Product | Vulnerability | Date added | Ransomware | CVSS |
|---|---|---|---|---|---|
| CVE-2025-53690 | Multiple Products | Sitecore Multiple Products Deserialization of Untrusted Data Vulnerability | 2025-09-04 | — | CRITICAL9.0 |
| CVE-2019-9875 | CMS and Experience Platform (XP) | Sitecore CMS and Experience Platform (XP) Deserialization Vulnerability | 2025-03-26 | — | HIGH8.8 |
| CVE-2019-9874 | CMS and Experience Platform (XP) | Sitecore CMS and Experience Platform (XP) Deserialization Vulnerability | 2025-03-26 | — | CRITICAL9.8 |
| CVE-2021-42237 | XP | Sitecore XP Remote Command Execution Vulnerability | 2022-03-25 | Known | CRITICAL9.8 |
Source: CISA Known Exploited Vulnerabilities catalog, joined with NIST NVD CVSS data. Vendor names are normalized across spellings. Compare all vendors.