CVE-2019-9875

8.8 HIGH CISA KEV - Actively Exploited

Published: May 31, 2019 Modified: November 07, 2025

Description

Deserialization of Untrusted Data in the anti CSRF module in Sitecore through 9.1 allows an authenticated attacker to execute arbitrary code by sending a serialized .NET object in an HTTP POST parameter.

AI Explanation

Get an AI-powered plain-language explanation of this vulnerability and remediation steps.

CVSS v3.x Details

0.0 Low Medium High Critical 10.0

Vector String

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory

https://dev.sitecore.net/Downloads.aspx

Source: cve@mitre.org

Product Vendor Advisory

https://www.synacktiv.com/blog.html

Source: cve@mitre.org

Third Party Advisory

https://www.synacktiv.com/ressources/advisories/Sitecore_CSRF_deserialize_RCE.pdf

Source: cve@mitre.org

Exploit Patch Third Party Advisory

https://dev.sitecore.net/Downloads.aspx

Source: af854a3a-2127-422b-91ae-364da2661108

Product Vendor Advisory

https://www.synacktiv.com/blog.html

Source: af854a3a-2127-422b-91ae-364da2661108

Third Party Advisory

https://www.synacktiv.com/ressources/advisories/Sitecore_CSRF_deserialize_RCE.pdf

Source: af854a3a-2127-422b-91ae-364da2661108

Exploit Patch Third Party Advisory

https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2019-9875

Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0

US Government Resource

7 reference(s) from NVD

Quick Stats

CVSS v3 Score

8.8 / 10.0

EPSS (Exploit Probability)

24.8%

96th percentile

Exploitation Status

Actively Exploited

Remediation due: 2025-04-16

Weaknesses (CWE)

CWE-502 CWE-502

Affected Vendors

sitecore

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