How severe is CVE-2025-27218?

CVE-2025-27218 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.

Is CVE-2025-27218 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 64% (99th percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2025-27218?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2025-27218 have an EU (EUVD) identifier?

Yes. CVE-2025-27218 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-4575.

When was CVE-2025-27218 published?

CVE-2025-27218 was published on 2025-02-20 and last updated on 2026-06-17.

CVE-2025-27218

CVE-2025-27218 is a medium-severity vulnerability with a CVSS 3.x base score of 5.3. Its EPSS exploit-prediction score of 64% places it in the 99th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-94.

Key facts

Severity: Medium (CVSS 3.x base score 5.3)
EPSS exploit prediction: 64% (99th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-4575
Weakness: CWE-94
Published: 2025-02-20
Last modified: 2026-06-17

Description

Sitecore Experience Manager (XM) and Experience Platform (XP) 10.4 before KB1002844 allow remote code execution through insecure deserialization.

Frequently asked questions

What is CVE-2025-27218?: Sitecore Experience Manager (XM) and Experience Platform (XP) 10.4 before KB1002844 allow remote code execution through insecure deserialization.
How severe is CVE-2025-27218?: CVE-2025-27218 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.
Is CVE-2025-27218 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 64% (99th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2025-27218?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-27218 have an EU (EUVD) identifier?: Yes. CVE-2025-27218 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-4575.
When was CVE-2025-27218 published?: CVE-2025-27218 was published on 2025-02-20 and last updated on 2026-06-17.

References

https://support.sitecore.com/kb?id=kb_article_view&sysparm_article=KB1003535

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