How severe is CVE-2020-25538?

CVE-2020-25538 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2020-25538 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 10% (95th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-25538?

CVE-2020-25538 affects Cmsuno Project Cmsuno. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-25538?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2020-25538 published?

CVE-2020-25538 was published on 2020-11-13 and last updated on 2026-06-17.

CVE-2020-25538

CVE-2020-25538 is a high-severity vulnerability in Cmsuno Project Cmsuno with a CVSS 3.x base score of 8.8. 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-94.

Key facts

Severity: High (CVSS 3.x base score 8.8)
CVSS v2: 6.5
EPSS exploit prediction: 10% (95th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-94
Affected product: Cmsuno Project Cmsuno
Published: 2020-11-13
Last modified: 2026-06-17

Description

An authenticated attacker can inject malicious code into "lang" parameter in /uno/central.php file in CMSuno 1.6.2 and run this PHP code in the web page. In this way, attacker can takeover the control of the server.

Frequently asked questions

What is CVE-2020-25538?: An authenticated attacker can inject malicious code into "lang" parameter in /uno/central.php file in CMSuno 1.6.2 and run this PHP code in the web page. In this way, attacker can takeover the control of the server.
How severe is CVE-2020-25538?: CVE-2020-25538 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2020-25538 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 10% (95th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-25538?: CVE-2020-25538 affects Cmsuno Project Cmsuno. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-25538?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2020-25538 published?: CVE-2020-25538 was published on 2020-11-13 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:cmsuno_project:cmsuno:1.6.2:*:*:*:*:*:*:*

More vulnerabilities in Cmsuno Project Cmsuno

CVE-2021-40889 — Critical (CVSS 9.8): CMSUno version 1.7.2 is affected by a PHP code execution vulnerability. sauvePass action in {webroot}/uno/central.php…
CVE-2020-25557 — High (CVSS 8.8): In CMSuno 1.6.2, an attacker can inject malicious PHP code as a "username" while changing his/her username & password.…
CVE-2020-15600 — Medium (CVSS 6.5): An issue was discovered in CMSUno before 1.6.1. uno.php allows CSRF to change the admin password.
CVE-2018-15567 — Medium (CVSS 6.1): CMSUno before 1.5.3 has XSS via the title field.
CVE-2021-36654 — Medium (CVSS 5.4): CMSuno 1.7 is vulnerable to an authenticated stored cross site scripting in modifying the filename parameter (tgo)…

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