How severe is CVE-2026-24936?

CVE-2026-24936 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-24936 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (51st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-24936?

CVE-2026-24936 affects Asustor Data Master. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-24936?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

Does CVE-2026-24936 have an EU (EUVD) identifier?

Yes. CVE-2026-24936 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-5316.

When was CVE-2026-24936 published?

CVE-2026-24936 was published on 2026-02-03 and last updated on 2026-06-17.

CVE-2026-24936

CVE-2026-24936 is a critical-severity vulnerability in Asustor Data Master with a CVSS 3.x base score of 9.8. 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-20.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v4: 9.5
EPSS exploit prediction: 1% (51st percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-5316
Weakness: CWE-20
Affected product: Asustor Data Master
Published: 2026-02-03
Last modified: 2026-06-17

Description

When a specific function is enabled while joining a AD Domain from ADM, an improper input parameters validation vulnerability in a specific CGI program allowing an unauthenticated remote attacker to write arbitrary data to any file on the system. By exploiting this vulnerability, attackers can overwrite critical system files, leading to a complete system compromise. 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-2026-24936?: When a specific function is enabled while joining a AD Domain from ADM, an improper input parameters validation vulnerability in a specific CGI program allowing an unauthenticated remote attacker to write arbitrary data to any file on the system. By exploiting this vulnerability, attackers can overwrite critical system files, leading to a complete system compromise. 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-2026-24936?: CVE-2026-24936 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-24936 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (51st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-24936?: CVE-2026-24936 affects Asustor Data Master. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-24936?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
Does CVE-2026-24936 have an EU (EUVD) identifier?: Yes. CVE-2026-24936 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-5316.
When was CVE-2026-24936 published?: CVE-2026-24936 was published on 2026-02-03 and last updated on 2026-06-17.

References

https://www.asustor.com/security/security_advisory_detail?id=51

Affected products (1)

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

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