CVE-2025-53690 | Sitecore Products ViewState Deserialization Vulnerability

Exp

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.

Published: 2025-09-03 Last update: 2025-10-30 Assigner: 9947ef80-c5d5-474a-bbab-97341a59000e Source: 9947ef80-c5d5-474a-bbab-97341a59000e
NVD Status：Analyzed，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2025-53690 is rated Critical Active Threat (90.8/100): CVSS Critical severity, with medium exploitation likelihood (EPSS 5.15%). CISA KEV confirms active exploitation (added 2025-09-04) affecting Sitecore / Multiple Products. a weakness (CWE-502) Unauthenticated remote administrative access may be possible. The CISA remediation deadline has passed—treat as an emergency patch priority.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

CISA KEV Record for CVE-2025-53690

Name: Sitecore Multiple Products Deserialization of Untrusted Data Vulnerability · CISA KEV detail

Exploit added: 2025-09-04

Action due: 2025-09-25

Required action: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

Public exploit references (Exploit-DB) for CVE-2025-53690

EDB-ID Source Kind Published Link
— nvd_ref exploit_tag Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2025-53690

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-05-20 6.84% 5.15% -1.68%
2 2026-04-29 8.54% 6.84% -1.70%
3 2026-04-01 — 8.54% —

Full EPSS history (39 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2025-53690

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
9.0 3.1 CRITICAL
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:H)
Even with access, the exploit needs extra luck, timing, or a fussy environment to actually work.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:C)
Breaking this can reach past the original component and bite other resources—bigger blast radius.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 2.2 6.0 9947ef80-c5d5-474a-bbab-97341a59000e

Weakness enumeration for CVE-2025-53690

Affected software / configurations for CVE-2025-53690

Vendor Product Version Raw CPE
sitecore experience_commerce <= 9.0 cpe:2.3:a:sitecore:experience_commerce:*:*:*:*:*:*:*:*
sitecore experience_manager <= 9.0 cpe:2.3:a:sitecore:experience_manager:*:*:*:*:*:*:*:*
sitecore experience_platform <= 9.0 cpe:2.3:a:sitecore:experience_platform:*:*:*:*:*:*:*:*
sitecore managed_cloud — cpe:2.3:a:sitecore:managed_cloud:-:*:*:*:*:*:*:*

References for CVE-2025-53690

cvelogic Threat Intelligence