High severity · published May 31, 2019
CVE-2019-9875
Sitecore CMS and Experience Platform (XP) Deserialization Vulnerability
In wildKEV
8.8
CVSS
25.4%
EPSS
Yes
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)25.4% · higher than 98% of CVEs
Exploited in the wildYes
CISA KEVListed Mar 26, 2025
Federal remediation dueApr 16, 2025
Ransomware campaign useNot known
Affected products
Which versions
CM
Cms · Sitecore
through 9.1 · source: NVD
CA
CMS and Experience Platform (XP) · Sitecore
All versions, or not specified · source: KEV
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2019-9875
CVE.org
https://www.cve.org/CVERecord?id=CVE-2019-9875
CISA KEV catalogue
https://www.cisa.gov/known-exploited-vulnerabilities-catalog
x_refsource_MISC
https://dev.sitecore.net/Downloads.aspx
x_refsource_MISC
https://www.synacktiv.com/blog.html
x_refsource_MISC
https://www.synacktiv.com/ressources/advisories/Sitecore_CSRF_deserialize_RCE.pdf
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