Is CVE-2019-9875 actively exploited?

Yes. CVE-2019-9875 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, which means exploitation in the wild has been confirmed.

Can CVE-2019-9875 be exploited remotely?

The attack vector of CVE-2019-9875 has not been classified yet.

What is the CVSS score of CVE-2019-9875?

CVE-2019-9875 has not received a CVSS score yet.

HOME VULNERABILITIESCVE-2019-9875

HIGHCISA KEVIN THE WILD

CVE-2019-9875

Published: March 26, 2025

EPSS:24.77%probability of exploitation in 30 daysPercentile:96.0th

Official 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.

NVD Source

CISA KEV Advisory

Sitecore CMS and Experience Platform (XP) Deserialization Vulnerability

Added to KEV: 2025-03-26Federal patch deadline: 2025-04-16

Required Action (CISA)

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

Risk Analysis

This vulnerability in Sitecore CMS and Experience Platform allows an authenticated attacker to execute arbitrary code by sending a specially crafted serialized .NET object. The high EPSS score and confirmed exploitation indicate a significant and urgent risk. This flaw is rated as HIGH severity.

Active exploitation of this vulnerability has been observed in the wild. Given the nature of the flaw, it is likely remotely exploitable once authentication is bypassed.

Recommended Action

Organizations using Sitecore CMS and Experience Platform should apply available patches or upgrades to address this deserialization vulnerability. Implement strong authentication and input validation to reduce the attack surface.

Generated by the CTIWATCH analysis pipeline from this CVE's metadata (CVSS, EPSS, KEV status, exploit intelligence). Verify against vendor advisories before acting.

Technical Analysis

CVE-2019-9875 requires local access, meaning attackers must already have a foothold on the target system.

Exploitation requires some privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

CISA has added CVE-2019-9875 to the Known Exploited Vulnerabilities (KEV) catalog, confirming active exploitation in the wild. U.S. federal agencies are required to patch this within the mandated timeframe, and all organizations should treat remediation as urgent.