CVE Watch—

CVE-2019-9875

Sitecore CMS and Experience Platform (XP) Deserialization Vulnerability

CVSS

—

No CVSS

EPSS

13.8%

p96

KEV

YES

Mar 26, 2025

Exploit Today

0-100

Published: — · Last modified: —

EPSS · 30d

13.8%EPSS · 30 days14.0%

2026-09-172026-10-15

KEV catalog record

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

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

Related CVEs

CVECVSSEPSSKEVRExploitTitleMod.

CVE-2019-9874—

99.7%

KEV—80Sitecore CMS and Experience Platform (XP) Deserialization Vulnerability—