CVE-2019-9874 KEV
9.8
CRITICAL · CVSS 3.1 · EPSS 83.7% (pctl 100)
Patch first
On CISA KEV — known exploited in the wild, due 2025-04-16.
Description
Deserialization of Untrusted Data in the Sitecore.Security.AntiCSRF (aka anti CSRF) module in Sitecore CMS 7.0 to 7.2 and Sitecore XP 7.5 to 8.2 allows an unauthenticated attacker to execute arbitrary code by sending a serialized .NET object in the HTTP POST parameter __CSRFTOKEN.
Scoring
| CVSS | 9.8 (CRITICAL, v3.1) |
|---|---|
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| EPSS | 83.74% — more likely to be exploited than 100% of all CVEs |
| Weakness | CWE-502 |
| On CISA KEV | yes — remediate by 2025-04-16 |
| Public exploit | none known |
| Published | 2019-05-31 |
| Last modified | 2026-06-17 |
CISA KEV
| Name | Sitecore CMS and Experience Platform (XP) Deserialization Vulnerability |
|---|---|
| Added | 2025-03-26 |
| Due | 2025-04-16 |
| Vendor / product | Sitecore / CMS and Experience Platform (XP) |
| Ransomware use | none reported |
Affected (2)
| Vendor | Product |
|---|---|
| sitecore | cms |
| sitecore | experience platform |
References
- https://dev.sitecore.net/Downloads.aspx
- https://www.synacktiv.com/blog.html
- https://www.synacktiv.com/ressources/advisories/Sitecore_CSRF_deserialize_RCE.pdf
- https://dev.sitecore.net/Downloads.aspx
- https://www.synacktiv.com/blog.html
- https://www.synacktiv.com/ressources/advisories/Sitecore_CSRF_deserialize_RCE.pdf
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2019-9874
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