How we count
Every figure on this page is a direct count of entries in CISA’s Known Exploited Vulnerabilities catalog attributed by CISA to Sitecore (KEV field vendorProject), refreshed daily. “Ransomware-linked” counts entries CISA marks as known to be used in ransomware campaigns; the remainder are “unknown” to CISA, not confirmed ransomware-free. A KEV listing means the vulnerability has been observed exploited in the wild. Snapshot as of 2026-09-02.
Exploited Sitecore vulnerabilities (CISA KEV)
| CVE | Product | Vulnerability | Added | |
|---|---|---|---|---|
| CVE-2025-53690 | Multiple Products | Sitecore Multiple Products Deserialization of Untrusted Data Vulnerability | 2025-09-04 | |
| CVE-2019-9875 | CMS and Experience Platform (XP) | Sitecore CMS and Experience Platform (XP) Deserialization Vulnerability | 2025-03-26 | |
| CVE-2019-9874 | CMS and Experience Platform (XP) | Sitecore CMS and Experience Platform (XP) Deserialization Vulnerability | 2025-03-26 | |
| CVE-2021-42237 | XP | Sitecore XP Remote Command Execution Vulnerability | 2022-03-25 | ransomware |
← All vendors by exploited-vulnerability count
🤖 Generated by defend.network from the CISA KEV catalog. Counts are deterministic aggregates of official CISA data; verify individual advisories at the linked sources.