CVE-2026-40552
CVE-2026-40552 is a medium-severity vulnerability with a CVSS 4.0 base score of 4.7. 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-669.
Key facts
- Severity: Medium (CVSS 4.0 base score 4.7)
- EPSS exploit prediction: 0% (20th percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2026-26046
- Weakness: CWE-669
- Published:
- Last modified:
Description
mpGabinet is vulnerable to Remote Command Execution. An authorized user with access to the application and direct access to the backend database can achieve system command execution by uploading an attachment and modifying its storage path in the database to reference an attacker-controlled remote network resource. Alternatively, it is possible to use a previously uploaded file and change its reference. When the application processes the attachment, and a user tries to open it, the referenced resource is executed by the system. Critically, this vulnerability can be exploited by any unauthenticated attacker by chaining it with CVE-2026-40550 and CVE-2026-40551, which allows obtaining database access, and logging onto any account. This issue affects mpGabinet version 23.12.19 and below.
Frequently asked questions
- What is CVE-2026-40552?
- mpGabinet is vulnerable to Remote Command Execution. An authorized user with access to the application and direct access to the backend database can achieve system command execution by uploading an attachment and modifying its storage path in the database to reference an attacker-controlled remote network resource. Alternatively, it is possible to use a previously uploaded file and change its reference. When the application processes the attachment, and a user tries to open it, the referenced resource is executed by the system. Critically, this vulnerability can be exploited by any unauthenticated attacker by chaining it with CVE-2026-40550 and CVE-2026-40551, which allows obtaining database access, and logging onto any account. This issue affects mpGabinet version 23.12.19 and below.
- How severe is CVE-2026-40552?
- CVE-2026-40552 has a CVSS 4.0 base score of 4.7, rated medium severity.
- Is CVE-2026-40552 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (20th percentile), an estimate of the probability of exploitation in the next 30 days.
- How do I fix CVE-2026-40552?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- Does CVE-2026-40552 have an EU (EUVD) identifier?
- Yes. CVE-2026-40552 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-26046.
- When was CVE-2026-40552 published?
- CVE-2026-40552 was published on 2026-04-28 and last updated on 2026-06-17.
References
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