Reference page — cumulative record through Monday, October 19, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.

CVE-2025-53690

CVE-2025-53690CRITICAL

Sitecore Products ViewState Deserialization Vulnerability

  AV  AC  PR  UI  S  C  I  A   CVSS    EPSS   %ile   KEV
   N   H   N   N  C  H  H  H    9.0   .6060   99.1   YES

AFFECTED
  Product                   Versions     Fixed
  Experience Manager (XM)   unspecified  —
  Experience Platform (XP)  unspecified  —

TIMELINE
  Jul 8   Reserved by Wiz
  Sep 3   Published (CNA: Wiz)
  Sep 4   Added to CISA KEV, remediation due 2025-09-25
  Oct 18  EXPLOIT PUBLISHED — CVE-2025-53690 (Sitecore Experience Manager (XM)). Public exploit reference added.

CWE-502 · CNA: Wiz · CVSS v3.1 · 3 references · NVD status: Analyzed · KEV due September 25, 2025

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.

Lifecycle

Complete event history — 4 events, chronological
Date	Event	Detail
July 8, 2025	Reserved	Reserved by Wiz
September 3, 2025	Published	Published (CNA: Wiz)
September 4, 2025	KEV ADDED	Added to CISA KEV, remediation due 2025-09-25
October 18, 2026	EXPLOIT PUBLISHED	EXPLOIT PUBLISHED — CVE-2025-53690 (Sitecore Experience Manager (XM)). Public exploit reference added.

Affected

Affected products and packages — 2 rows
Vendor	Product / Package	Ecosystem	Version introduced	Fixed
Sitecore	Experience Manager (XM)	—	—	—
Sitecore	Experience Platform (XP)	—	—	—

Weaknesses

CWE-502

References (3)

https://cloud.google.com/blog/topics/threat-intelligence/viewstate-deserialization-zero-day-vulnerability [Exploit, Third Party Advisory]
https://support.sitecore.com/kb?id=kb_article_view&sysparm_article=KB1003865 [Vendor Advisory]
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-53690 [US Government Resource]

Authoritative record: CVE-2025-53690 at cve.org

Vendors: sitecore

Weaknesses: CWE-502

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2025-53690 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Monday, October 19, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.