CVE-2025-53690: Sitecore Multiple Products Deserialization of Untrusted Data Vulnerability

Q: How do I fix CVE-2025-53690?

experience commerce: upgrade to newer than 9.0; experience manager: upgrade to newer than 9.0; experience platform: upgrade to newer than 9.0. Exact commands for each OS are on this page.

Q: Is CVE-2025-53690 being exploited?

Yes. CVE-2025-53690 is on the CISA Known Exploited Vulnerabilities list, so treat it as patch-now.

Q: What does CVE-2025-53690 affect?

CVE-2025-53690 affects experience commerce, experience manager, experience platform. Severity is critical (CVSS 9.0). 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.

Q: How urgent is CVE-2025-53690?

Priority 91/100. Critical severity; EPSS top 1%: very likely to be exploited; Exploited in the wild (CISA KEV); Public exploit reference; Remotely exploitable, no login, no user action

Patch now

CRITICAL 9.0EXPLOITEDREMOTEUPGRADEUPGRADEUPGRADE

CVE-2025-53690 is a critical-severity flaw (CVSS 9.0) affecting experience commerce, experience manager, experience platform, reported as exploited in the wild. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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.

Why this priority

Critical severity
EPSS top 1%: very likely to be exploited
Exploited in the wild (CISA KEV)
Public exploit reference
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	9.0 (Critical)
Attack vector	Network (remote)
Attack complexity	High
Privileges needed	None
User interaction	None
EPSS exploit chance	60.6% (top 1%)
CISA exploited list	Yes, fix due 2025-09-25
Weakness	CWE-502
Published	2025-09-03
Last modified	2026-10-18

Publisher (CNA): Wiz · Vendor: sitecore

Last updated 2026-10-18 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2025-09-03 20:15 UTCPublished CVE record published
2025-09-04Exploited Added to the CISA Known Exploited Vulnerabilities list
2025-09-25Deadline CISA due date for US federal agencies to patch
2026-10-18 21:10 UTCUpdated Record last modified

sitecore experience commerce UPGRADE

Affected: <= 9.0

Fixed in: newer than 9.0

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy experience-commerce || rpm -q experience-commerce || experience-commerce --version

2. UPGRADE to newer than 9.0 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade experience-commerce

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade experience-commerce

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

sitecore experience manager UPGRADE

Affected: <= 9.0

Fixed in: newer than 9.0

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy experience-manager || rpm -q experience-manager || experience-manager --version

2. UPGRADE to newer than 9.0 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade experience-manager

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade experience-manager

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

sitecore experience platform UPGRADE

Affected: <= 9.0

Fixed in: newer than 9.0

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy experience-platform || rpm -q experience-platform || experience-platform --version

2. UPGRADE to newer than 9.0 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade experience-platform

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade experience-platform

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

sitecore managed cloud MITIGATE

Affected: all versions

Fixed in: no fixed release known

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy managed-cloud || rpm -q managed-cloud || managed-cloud --version

No fixed or unaffected release known

Apply the vendor mitigation from the advisory, disable the affected feature, or restrict network access.

Exact fixes by distribution

A distro patch exists: prefer upgrading over downgrading.

Fedora 46 · pipx · FIXED · 1.18.9-1.fc46 · FEDORA-2026-95305954ab · source

sudo dnf upgrade --advisory=FEDORA-2026-95305954ab

Fedora ELN · libisds · FIXED · 0.11.2-19.eln159 · FEDORA-2026-bf61b68668 · source

sudo dnf upgrade --advisory=FEDORA-2026-bf61b68668

Public exploits and detection

Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.

GitHub PoC: ErikLearningSec/CVE-2025-53690-POC (8 stars)
GitHub PoC: rxerium/CVE-2025-53690 (5 stars)
GitHub PoC: m0d0ri205/CVE-2025-53690-Analysis (3 stars)
GitHub PoC: B1ack4sh/Blackash-CVE-2025-53690

Verify at the official source NVD · CVE Program · CISA KEV catalog · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2025-53690?

experience commerce: upgrade to newer than 9.0; experience manager: upgrade to newer than 9.0; experience platform: upgrade to newer than 9.0. Exact commands for each OS are on this page.

Is CVE-2025-53690 being exploited?

Yes. CVE-2025-53690 is on the CISA Known Exploited Vulnerabilities list, so treat it as patch-now.

What does CVE-2025-53690 affect?

CVE-2025-53690 affects experience commerce, experience manager, experience platform. Severity is critical (CVSS 9.0). 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.

How urgent is CVE-2025-53690?

Priority 91/100. Critical severity; EPSS top 1%: very likely to be exploited; Exploited in the wild (CISA KEV); Public exploit reference; Remotely exploitable, no login, no user action

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References

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