CVE-2019-9875
Sitecore CMS and Experience Platform (XP) Deserialization Vulnerability
CVSS
—
No CVSS
EPSS
14.0%
p96
KEV
YES
Mar 26, 2025
Exploit Today
79
0-100
Published: — · Last modified: —
Product
Sitecore / CMS and Experience Platform (XP)
Vulnerability
Sitecore CMS and Experience Platform (XP) Deserialization Vulnerability
Added to KEV
Mar 26, 2025
Remediate by
Apr 16, 2025
Known ransomware use
No
Summary description
Sitecore CMS and Experience Platform (XP) contain a deserialization vulnerability in the Sitecore.Security.AntiCSRF module that allows an authenticated attacker to execute arbitrary code by sending a serialized .NET object in the HTTP POST parameter __CSRFTOKEN.
Required action
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Notes
https://support.sitecore.com/kb?id=kb_article_view&sysparm_article=KB0038556 ; https://nvd.nist.gov/vuln/detail/CVE-2019-9875