How severe is CVE-2025-5139?

CVE-2025-5139 has a CVSS 3.x base score of 5.6, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability low.

Is CVE-2025-5139 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (84th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-5139?

CVE-2025-5139 primarily affects Qualitor. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2025-5139?

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

Does CVE-2025-5139 have an EU (EUVD) identifier?

Yes. CVE-2025-5139 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-16234.

When was CVE-2025-5139 published?

CVE-2025-5139 was published on 2025-05-25 and last updated on 2026-06-17.

CVE-2025-5139

CVE-2025-5139 is a medium-severity vulnerability in Qualitor with a CVSS 3.x base score of 5.6. 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-77.

Key facts

Severity: Medium (CVSS 3.x base score 5.6)
CVSS v2: 6.8
CVSS v4: 2.9
EPSS exploit prediction: 3% (84th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-16234
Weakness: CWE-77
Affected product: Qualitor
Published: 2025-05-25
Last modified: 2026-06-17

Description

A vulnerability was found in Qualitor 8.20/8.24. It has been rated as critical. Affected by this issue is some unknown functionality of the file /html/ad/adconexaooffice365/request/testaConexaoOffice365.php of the component Office 365-type Connection Handler. The manipulation of the argument nmconexao leads to command injection. The attack may be launched remotely. The complexity of an attack is rather high. The exploitation is known to be difficult. The exploit has been disclosed to the public and may be used. Upgrading to version 8.20.56 and 8.24.31 is able to address this issue. It is recommended to upgrade the affected component.

Frequently asked questions

What is CVE-2025-5139?: A vulnerability was found in Qualitor 8.20/8.24. It has been rated as critical. Affected by this issue is some unknown functionality of the file /html/ad/adconexaooffice365/request/testaConexaoOffice365.php of the component Office 365-type Connection Handler. The manipulation of the argument nmconexao leads to command injection. The attack may be launched remotely. The complexity of an attack is rather high. The exploitation is known to be difficult. The exploit has been disclosed to the public and may be used. Upgrading to version 8.20.56 and 8.24.31 is able to address this issue. It is recommended to upgrade the affected component.
How severe is CVE-2025-5139?: CVE-2025-5139 has a CVSS 3.x base score of 5.6, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability low.
Is CVE-2025-5139 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (84th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-5139?: CVE-2025-5139 primarily affects Qualitor. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2025-5139?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-5139 have an EU (EUVD) identifier?: Yes. CVE-2025-5139 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-16234.
When was CVE-2025-5139 published?: CVE-2025-5139 was published on 2025-05-25 and last updated on 2026-06-17.

References

Affected products (2)

cpe:2.3:a:qualitor:qualitor:8.20:*:*:*:*:*:*:*
cpe:2.3:a:qualitor:qualitor:8.24:*:*:*:*:*:*:*

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