CVE-2025-5139: A vulnerability was found in Qualitor 8.20/8.24

This week

MEDIUM 5.6REMOTEDOWNGRADE

CVE-2025-5139 is a medium-severity flaw (CVSS 5.6) affecting qualitor. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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 diffic

Why this priority

Public exploit reference
Remotely exploitable, no login, no user action

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	5.6 (Medium)
Attack vector	Network (remote)
Attack complexity	High
Privileges needed	None
User interaction	None
EPSS exploit chance	2.7% (top 14%)
CISA exploited list	No
Weakness	CWE-74, CWE-77
Published	2025-05-25
Last modified	2026-06-17

Publisher (CNA): VulDB · Vendor: qualitor

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2025-05-25 01:15 UTCPublished CVE record published
2026-06-17 09:47 UTCUpdated Record last modified

qualitor qualitor DOWNGRADE

Affected: 8.20 · 8.24

Fixed in: no fixed release known

Safe to downgrade to: a release before 8.20

1. Check installed version

apt-cache policy qualitor || rpm -q qualitor || qualitor --version

2. No fixed release: DOWNGRADE to a release before 8.20 (Debian / Ubuntu)

apt-cache madison qualitor sudo apt install qualitor=<VERSION_BEFORE_8.20> sudo apt-mark hold qualitor

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list qualitor sudo dnf downgrade qualitor-<VERSION_BEFORE_8.20> sudo dnf versionlock add qualitor

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2025-5139?

qualitor: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2025-5139 being exploited?

CVE-2025-5139 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2025-5139 affect?

CVE-2025-5139 affects qualitor. Severity is medium (CVSS 5.6). 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

How urgent is CVE-2025-5139?

Priority 51/100. Public exploit reference; Remotely exploitable, no login, no user action

Software pages

PHP vulnerabilities

Related CVEs

CVE-2025-14580 LOW 3.5 UPGRADE A security vulnerability has been detected in Qualitor up to 8.24.73
CVE-2024-48360 HIGH 7.5 DOWNGRADE Qualitor v8.24 was discovered to contain a Server-Side Request Forgery (SSRF) via the component /request/viewV
CVE-2024-48359 CRITICAL 9.8 DOWNGRADE Qualitor v8.24 was discovered to contain a remote code execution (RCE) vulnerability via the gridValoresPopHid
CVE-2024-44849 CRITICAL 9.8 DOWNGRADE Qualitor up to 8.24 is vulnerable to Remote Code Execution (RCE) via Arbitrary File Upload in checkAcesso.php.

References

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