How severe is CVE-2025-3177?

CVE-2025-3177 has a CVSS 3.x base score of 5.0, rated medium severity. It is exploitable over network with high attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability low.

Is CVE-2025-3177 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (34th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-3177?

CVE-2025-3177 affects Fastcms Project Fastcms. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-3177?

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

Does CVE-2025-3177 have an EU (EUVD) identifier?

Yes. CVE-2025-3177 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-15075.

When was CVE-2025-3177 published?

CVE-2025-3177 was published on 2025-04-03 and last updated on 2026-06-17.

CVE-2025-3177

CVE-2025-3177 is a medium-severity vulnerability in Fastcms Project Fastcms with a CVSS 3.x base score of 5.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-320.

Key facts

Severity: Medium (CVSS 3.x base score 5.0)
CVSS v2: 4.6
CVSS v4: 2.3
EPSS exploit prediction: 0% (34th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-15075
Weakness: CWE-320
Affected product: Fastcms Project Fastcms
Published: 2025-04-03
Last modified: 2026-06-17

Description

A vulnerability was found in FastCMS 0.1.5. It has been declared as critical. This vulnerability affects unknown code of the component JWT Handler. The manipulation leads to use of hard-coded cryptographic key . The attack can be initiated remotely. The complexity of an attack is rather high. The exploitation appears to be difficult. The exploit has been disclosed to the public and may be used.

Frequently asked questions

What is CVE-2025-3177?: A vulnerability was found in FastCMS 0.1.5. It has been declared as critical. This vulnerability affects unknown code of the component JWT Handler. The manipulation leads to use of hard-coded cryptographic key . The attack can be initiated remotely. The complexity of an attack is rather high. The exploitation appears to be difficult. The exploit has been disclosed to the public and may be used.
How severe is CVE-2025-3177?: CVE-2025-3177 has a CVSS 3.x base score of 5.0, rated medium severity. It is exploitable over network with high attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability low.
Is CVE-2025-3177 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (34th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-3177?: CVE-2025-3177 affects Fastcms Project Fastcms. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-3177?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-3177 have an EU (EUVD) identifier?: Yes. CVE-2025-3177 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-15075.
When was CVE-2025-3177 published?: CVE-2025-3177 was published on 2025-04-03 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:fastcms_project:fastcms:0.1.5:*:*:*:*:*:*:*

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