CVE-2025-53690
critical CISA KEVSitecore Multiple Products Deserialization of Untrusted Data Vulnerability
Vendor / product: Sitecore — Multiple Products
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.
CVSS
9.0
9.0 (CVSS v3.1)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H Severity source: NVD CVSS v3.1 (9947ef80-c5d5-474a-bbab-97341a59000e)
Timeline (UTC)
Published: 2025-09-03 20:15
Modified: 2026-10-18 21:10
NVD status: Analyzed
Last synced 1 day ago
Verified against the source API 2026-10-27 07:07 UTC
Exploitation
Listed in CISA KEV
Added 2025-09-04 · due 2025-09-25
Known ransomware use: Unknown
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.
Affected products
sitecore / experience_commerce ≤9.0
sitecore / experience_manager ≤9.0
sitecore / experience_platform ≤9.0
sitecore / managed_cloud all versions
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
References
- https://cloud.google.com/blog/topics/threat-intelligence/viewstate-deserialization-zero-da... 9947ef80-c5d5-474a-bbab-97341a59000e
- https://support.sitecore.com/kb?id=kb_article_view&sysparm_article=KB1003865 9947ef80-c5d5-474a-bbab-97341a59000e
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-53690 134c704f-9b21-4f2e-91b3-4a467353bcc0
Data sources
CISA KEV — fetched 2026-10-27 06:50 UTC · record ↗
NVD CVE API 2.0 — fetched 2026-10-27 07:07 UTC · record ↗