Actively exploited · Published Sep 3, 2025 · Assigned by Wiz
CVE-2025-53690Sitecore Products ViewState Deserialization Vulnerability
Critical 9.0 Exploited
In plain English
A critical-severity unsafe deserialization in Experience Manager (XM) from Sitecore. Attackers are actively exploiting it in the wild (listed by CISA on September 4, 2025). The chance it is exploited in the next 30 days is estimated at 60.7% (higher than 99.2% of all known vulnerabilities). Ready-made attack tooling exists: public proof-of-concept code. Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
CISA guidance
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Federal agencies must remediate by Sep 25, 2025.
Official description
Deserialization of Untrusted Data vulnerability in Sitecore Experience Manager (XM), Sitecore Experience Platform (XP) allows Code Injection.This issue affects Experience Manager (XM): through 9.0; Experience Platform (XP): through 9.0.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Sitecore | Experience Manager (XM) | 0 – through 9.0 |
| Sitecore | Experience Platform (XP) | 0 – through 9.0 |
Weakness: CWE-502 · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H