CVE-2025-53691 | Sitecore Experience Remote Code Execution through Insecure Deserialization

Exp

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.

Published: 2025-09-03 Last update: 2025-09-08 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-2025-53691 is rated High Exploit Risk (82.5/100): CVSS High severity, with medium exploitation likelihood (EPSS 5.04%). 1 public exploit reference(s) are indexed (Exploit-DB). Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

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

Public exploit references (Exploit-DB) for CVE-2025-53691

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

Exploit prediction scoring system (EPSS) score for CVE-2025-53691

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 4.19% 5.04% +0.85%
2 2026-05-09 5.00% 4.19% -0.82%
3 2026-04-09 — 5.00% —

Full EPSS history (14 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2025-53691

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
8.8 3.1 HIGH
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/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:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:L)
A normal user session is enough; they don’t have to be admin.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
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.
 2.8 5.9 9947ef80-c5d5-474a-bbab-97341a59000e

Weakness enumeration for CVE-2025-53691

Affected software / configurations for CVE-2025-53691

Vendor Product Version Raw CPE
sitecore experience_commerce >= 9.0, <= 10.4 cpe:2.3:a:sitecore:experience_commerce:*:*:*:*:*:*:*:*
sitecore experience_manager >= 9.0, <= 10.4 cpe:2.3:a:sitecore:experience_manager:*:*:*:*:*:*:*:*
sitecore experience_platform >= 9.0, < 10.4 cpe:2.3:a:sitecore:experience_platform:*:*:*:*:*:*:*:*
sitecore experience_platform 10.4 cpe:2.3:a:sitecore:experience_platform:10.4:-:*:*:*:*:*:*
sitecore managed_cloud — cpe:2.3:a:sitecore:managed_cloud:-:*:*:*:*:*:*:*

References for CVE-2025-53691

cvelogic Threat Intelligence