How severe is CVE-2021-25809?

CVE-2021-25809 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-2021-25809 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (56th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-25809?

CVE-2021-25809 affects Ucms Project Ucms. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-25809?

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

When was CVE-2021-25809 published?

CVE-2021-25809 was published on 2021-07-23 and last updated on 2026-06-17.

CVE-2021-25809

CVE-2021-25809 is a medium-severity vulnerability in Ucms Project Ucms with a CVSS 3.x base score of 5.3. 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-209.

Key facts

Severity: Medium (CVSS 3.x base score 5.3)
CVSS v2: 5.0
EPSS exploit prediction: 1% (56th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-209
Affected product: Ucms Project Ucms
Published: 2021-07-23
Last modified: 2026-06-17

Description

UCMS 1.5.0 was discovered to contain a physical path leakage via an error message returned by the adminchannelscache() function in top.php.

Frequently asked questions

What is CVE-2021-25809?: UCMS 1.5.0 was discovered to contain a physical path leakage via an error message returned by the adminchannelscache() function in top.php.
How severe is CVE-2021-25809?: CVE-2021-25809 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-2021-25809 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (56th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-25809?: CVE-2021-25809 affects Ucms Project Ucms. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-25809?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-25809 published?: CVE-2021-25809 was published on 2021-07-23 and last updated on 2026-06-17.

References

https://github.com/Gingsguard/ucms/blob/main/UCMS%20v.1.5.0%20Information%20leakage.md

Affected products (1)

cpe:2.3:a:ucms_project:ucms:1.5.0:*:*:*:*:*:*:*

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