CVE-2025-53691

VendorsitecoreProductexperience platform, experience manager, experience commerce, managed cloudDiscoveredSep 3, 2025UpdatedSep 8, 2025

Deserialization of Untrusted Data vulnerability in Sitecore Experience Manager (XM), Sitecore Experience Platform (XP) allows Remote Code Execution (RCE).This issue affects Experience Manager (XM): from 9.0 through 9.3, from 10.0 through 10.4; Experience Platform (XP): from 9.0 through 9.3, from 10.0 through 10.4.

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CVSS v3.1

8.8 HIGH

EPSS

1.64%

probability of exploitation in 30 days

CISA KEV

Not listed

no confirmed exploitation reported

News coverage

sources referencing this CVE

Related IOCs

seen in the same coverage

EPSS Trend

Aug 16, 2026 → Oct 22, 2026

▲ 0.09pp

1.54% → 1.64% over 3 tracked changes

CVSS v3.1 Detail

Attack VectorNETWORK

Attack ComplexityLOW

Privileges RequiredLOW

User InteractionNONE

ScopeUNCHANGED

ConfidentialityHIGH

IntegrityHIGH

AvailabilityHIGH

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Connections

6 relationships

CWE-502

source

Timeline

disclosure → media coverage

Aug 29, 2025

thehackernews.com reports: Researchers Warn of Sitecore Exploit Chain Linking Cache Poisoning and Remote Code Execution

Sep 3, 2025

Disclosure — published as a CVE record. · last revised by NVD Sep 8, 2025

Public PoC (1)

github.com/blueisbeautiful/CVE-2025-53691

Unverified third-party code — review before executing.