CVE-2025-53690
RCE in Sitecore Experience Commerce ≤ 9.0
Raw vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:HSummary
CVE-2025-53690 is a critical-severity Deserialization of Untrusted Data (CWE-502) vulnerability in Sitecore Experience Commerce. Its CVSS base score is 9.0 (Critical).
Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked in the top 2% of CVEs by exploit likelihood; CISA has added it to the Known Exploited Vulnerabilities catalog; a public proof-of-concept is referenced.
The strongest mitigations our analysis identified map to SA-11 (Developer Testing and Evaluation) and SI-10 (Information Input Validation) — see the control section below for these in your framework.
Deeper analysis AI-assisted summary
Synthesised by an AI model from the NVD description and linked references — a reading aid, not an authoritative source.
CVE-2025-53690 is a deserialization of untrusted data vulnerability, assigned CWE-502, that permits code injection. It affects Sitecore Experience Manager (XM) and Experience Platform (XP) through version 9.0. The flaw carries a CVSS 3.1 score of 9.0 with a network attack vector, high complexity, no required privileges or user interaction, and changed scope, resulting in full confidentiality, integrity, and availability impact.
An unauthenticated remote attacker can supply malicious serialized data, most likely through ASP.NET ViewState, to trigger arbitrary code execution on the affected Sitecore instance. Successful exploitation grants the attacker the ability to run code in the context of the application, potentially leading to full server compromise.
Sitecore has published remediation guidance in KB1003865. The vulnerability appears in CISA’s Known Exploited Vulnerabilities catalog, confirming real-world exploitation. Its EPSS score rose from lower values after disclosure to a peak of 0.1007 on 2026-03-03 before receding, indicating a period of increased exploitation interest.
OWASP Top 10 for Web (2025)
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2025-26629
Vulnerability Data
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.
- CWE(s)
- KEV Date Added
- 04 September 2025
Related Threats
MITRE ATT&CK Enterprise Techniques
CVEs Like This One
Affected Assets
Mitigating Controls
Mitigating Controls (NIST 800-53 r5) AI
Developer testing and evaluation can uncover deserialization flaws before deployment.
Input validation directly stops deserialization of untrusted data by ensuring inputs are valid before processing.
Engineering principles such as safe deserialization and input sanitization structurally prevent the weakness from being introduced.
Integrity verification tools can detect malformed or tampered serialized data after the fact.
Mitigating Controls (NIST CSF 2.0) AI
Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→CSF cross-walk (authority under review) — links open the control.
PR.PS-02 addresses only post-deployment updates/patching and cannot prevent introduction of unsafe deserialization code, yet it can remediate some instances when the flaw exists in outdated libraries or components.
Mitigating Controls (ISO/IEC 27001:2022 Annex A) AI
Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→ISO cross-walk (authority under review) — links open the control.
Security testing includes validation of deserialization routines and the use of untrusted data, reducing the likelihood that unsafe object reconstruction will be deployed.
Requiring vetted libraries, regular updates and SAST before release reduces the likelihood that deserialization logic will accept and act on attacker-controlled serialized objects.
Regular scanning of third-party libraries and timely patching reduce the likelihood that unsafe deserialization vulnerabilities remain active.
Mandatory malware scanning of data received over networks or storage media intercepts malicious serialized payloads before they are deserialized by the target application.