How severe is CVE-2025-13052?

CVE-2025-13052 has a CVSS 3.x base score of 5.9, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2025-13052 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (5th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-13052?

CVE-2025-13052 affects Asustor Data Master. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-13052?

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

Does CVE-2025-13052 have an EU (EUVD) identifier?

Yes. CVE-2025-13052 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-202943.

When was CVE-2025-13052 published?

CVE-2025-13052 was published on 2025-12-12 and last updated on 2026-06-17.

CVE-2025-13052

CVE-2025-13052 is a medium-severity vulnerability in Asustor Data Master with a CVSS 3.x base score of 5.9. 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-295.

Key facts

Severity: Medium (CVSS 3.x base score 5.9)
CVSS v4: 7.0
EPSS exploit prediction: 0% (5th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-202943
Weakness: CWE-295
Affected product: Asustor Data Master
Published: 2025-12-12
Last modified: 2026-06-17

Description

When the user set the Notification's sender to send emails to the SMTP server via msmtp, an improper validated TLS/SSL certificates allows an attacker who can intercept network traffic between the SMTP client and server to execute a man-in-the-middle (MITM) attack, which may obtain the sensitive information of the SMTP. Affected products and versions include: from ADM 4.1.0 through ADM 4.3.3.RKD2 as well as from ADM 5.0.0 through ADM 5.1.0.RN42.

Frequently asked questions

What is CVE-2025-13052?: When the user set the Notification's sender to send emails to the SMTP server via msmtp, an improper validated TLS/SSL certificates allows an attacker who can intercept network traffic between the SMTP client and server to execute a man-in-the-middle (MITM) attack, which may obtain the sensitive information of the SMTP. Affected products and versions include: from ADM 4.1.0 through ADM 4.3.3.RKD2 as well as from ADM 5.0.0 through ADM 5.1.0.RN42.
How severe is CVE-2025-13052?: CVE-2025-13052 has a CVSS 3.x base score of 5.9, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2025-13052 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (5th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-13052?: CVE-2025-13052 affects Asustor Data Master. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-13052?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-13052 have an EU (EUVD) identifier?: Yes. CVE-2025-13052 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-202943.
When was CVE-2025-13052 published?: CVE-2025-13052 was published on 2025-12-12 and last updated on 2026-06-17.

References

https://www.asustor.com/security/security_advisory_detail?id=49

Affected products (1)

cpe:2.3:o:asustor:data_master:*:*:*:*:*:*:*:*

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