How severe is CVE-2026-24934?

CVE-2026-24934 has a CVSS 3.x base score of 3.7, rated low severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability none.

Is CVE-2026-24934 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-2026-24934?

CVE-2026-24934 affects Asustor Data Master. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-24934?

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

Does CVE-2026-24934 have an EU (EUVD) identifier?

Yes. CVE-2026-24934 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-5285.

When was CVE-2026-24934 published?

CVE-2026-24934 was published on 2026-02-03 and last updated on 2026-06-17.

CVE-2026-24934

CVE-2026-24934 is a low-severity vulnerability in Asustor Data Master with a CVSS 3.x base score of 3.7. 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-295.

Key facts

Severity: Low (CVSS 3.x base score 3.7)
CVSS v4: 6.3
EPSS exploit prediction: 0% (5th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-5285
Weakness: CWE-295
Affected product: Asustor Data Master
Published: 2026-02-03
Last modified: 2026-06-17

Description

The DDNS function uses an insecure HTTP connection or fails to validate the SSL/TLS certificate when querying an external server for the device's WAN IP address. An unauthenticated remote attacker can perform a Man-in-the-Middle (MitM) attack to spoof the response, leading the device to update its DDNS record with an incorrect IP address. Affected products and versions include: from ADM 4.1.0 through ADM 4.3.3.ROF1 as well as from ADM 5.0.0 through ADM 5.1.1.RCI1.

Frequently asked questions

What is CVE-2026-24934?: The DDNS function uses an insecure HTTP connection or fails to validate the SSL/TLS certificate when querying an external server for the device's WAN IP address. An unauthenticated remote attacker can perform a Man-in-the-Middle (MitM) attack to spoof the response, leading the device to update its DDNS record with an incorrect IP address. Affected products and versions include: from ADM 4.1.0 through ADM 4.3.3.ROF1 as well as from ADM 5.0.0 through ADM 5.1.1.RCI1.
How severe is CVE-2026-24934?: CVE-2026-24934 has a CVSS 3.x base score of 3.7, rated low severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability none.
Is CVE-2026-24934 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-2026-24934?: CVE-2026-24934 affects Asustor Data Master. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-24934?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-24934 have an EU (EUVD) identifier?: Yes. CVE-2026-24934 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-5285.
When was CVE-2026-24934 published?: CVE-2026-24934 was published on 2026-02-03 and last updated on 2026-06-17.

References

https://www.asustor.com/security/security_advisory_detail?id=50

Affected products (1)

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

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