How severe is CVE-2025-23209?

CVE-2025-23209 has a CVSS 3.x base score of 8.0, rated high severity. It is exploitable over network with high attack complexity, requires low privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2025-23209 being actively exploited?

Yes. CVE-2025-23209 is on CISA's Known Exploited Vulnerabilities (KEV) catalog, added on 2025-02-20, which means active exploitation has been confirmed. It should be prioritised for remediation.

What products are affected by CVE-2025-23209?

CVE-2025-23209 primarily affects Craftcms Craft Cms. In total, 7 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2025-23209?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Because this CVE is known to be actively exploited, treat remediation as urgent — CISA KEV typically sets a short remediation deadline.

Does CVE-2025-23209 have an EU (EUVD) identifier?

Yes. CVE-2025-23209 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-0208. It is also flagged as exploited in the EUVD (since 2025-02-20).

When was CVE-2025-23209 published?

CVE-2025-23209 was published on 2025-01-18 and last updated on 2026-06-17.

CVE-2025-23209

CVE-2025-23209 is a high-severity vulnerability in Craftcms Craft Cms with a CVSS 3.x base score of 8.0. It is listed in CISA's Known Exploited Vulnerabilities (KEV) catalog, confirming it has been exploited in the wild (added 2025-02-20). The underlying weakness is classified as CWE-94.

Key facts

Severity: High (CVSS 3.x base score 8.0)
EPSS exploit prediction: 5% (91st percentile)
Actively exploited: Yes — listed in CISA KEV (added 2025-02-20)
EU (EUVD) id: EUVD-2025-0208
EU exploitation: Flagged exploited in the ENISA EU Vulnerability Database (since 2025-02-20)
Weakness: CWE-94
Affected product: Craftcms Craft Cms
Published: 2025-01-18
Last modified: 2026-06-17

Description

Craft is a flexible, user-friendly CMS for creating custom digital experiences on the web and beyond. This is an remote code execution (RCE) vulnerability that affects Craft 4 and 5 installs where your security key has already been compromised. Anyone running an unpatched version of Craft with a compromised security key is affected. This vulnerability has been patched in Craft 5.5.8 and 4.13.8. Users who cannot update to a patched version, should rotate their security keys and ensure their privacy to help migitgate the issue.

Frequently asked questions

What is CVE-2025-23209?: Craft is a flexible, user-friendly CMS for creating custom digital experiences on the web and beyond. This is an remote code execution (RCE) vulnerability that affects Craft 4 and 5 installs where your security key has already been compromised. Anyone running an unpatched version of Craft with a compromised security key is affected. This vulnerability has been patched in Craft 5.5.8 and 4.13.8. Users who cannot update to a patched version, should rotate their security keys and ensure their privacy to help migitgate the issue.
How severe is CVE-2025-23209?: CVE-2025-23209 has a CVSS 3.x base score of 8.0, rated high severity. It is exploitable over network with high attack complexity, requires low privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2025-23209 being actively exploited?: Yes. CVE-2025-23209 is on CISA's Known Exploited Vulnerabilities (KEV) catalog, added on 2025-02-20, which means active exploitation has been confirmed. It should be prioritised for remediation.
What products are affected by CVE-2025-23209?: CVE-2025-23209 primarily affects Craftcms Craft Cms. In total, 7 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2025-23209?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Because this CVE is known to be actively exploited, treat remediation as urgent — CISA KEV typically sets a short remediation deadline.
Does CVE-2025-23209 have an EU (EUVD) identifier?: Yes. CVE-2025-23209 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-0208. It is also flagged as exploited in the EUVD (since 2025-02-20).
When was CVE-2025-23209 published?: CVE-2025-23209 was published on 2025-01-18 and last updated on 2026-06-17.

References

Affected products (7)

cpe:2.3:a:craftcms:craft_cms:*:*:*:*:*:*:*:*
cpe:2.3:a:craftcms:craft_cms:4.0.0:-:*:*:*:*:*:*
cpe:2.3:a:craftcms:craft_cms:4.0.0:rc1:*:*:*:*:*:*
cpe:2.3:a:craftcms:craft_cms:4.0.0:rc2:*:*:*:*:*:*
cpe:2.3:a:craftcms:craft_cms:4.0.0:rc3:*:*:*:*:*:*
cpe:2.3:a:craftcms:craft_cms:5.0.0:-:*:*:*:*:*:*
cpe:2.3:a:craftcms:craft_cms:5.0.0:rc1:*:*:*:*:*:*

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