CVE-2026-24933: ASUSTOR ADM · Improper Certificate Validation
Affects ASUSTOR ADMSource CVE Database V5
Not known to be exploited · CVSS 8.9 High.
Data as of 26 Oct 2026, 17:16 UTC
- EPSS
- 0.2% chance of exploitation in 30 days – higher than 12% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:H/SI:N/SA:NExploitation evidence
Disclosed: evidence found.
CVE published 3 Feb 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| ASUSTORADM | Affected
| Fixed in– |
AI-suggested
- Immediately restrict network access to ASUSTOR ADM management interfaces, limiting exposure to trusted internal networks or VPNs only.
- Monitor network traffic for signs of TLS interception or anomalies indicative of MitM attacks, using intrusion detection systems or network security monitoring tools.
- Employ network segmentation to isolate NAS devices from general user networks, reducing the attack surface.
- Enforce strong authentication and access controls on NAS devices to limit potential lateral movement if credentials are compromised.
- Regularly audit and update device firmware and software; although no patches are currently linked, stay alert for official ASUSTOR updates addressing this vulnerability.
- Consider deploying endpoint protection solutions capable of detecting unusual network behaviors related to certificate validation failures.
- Educate IT staff about the risks of improper certificate validation and the importance of verifying SSL/TLS configurations.
- Where possible, replace or upgrade devices running vulnerable ADM versions to versions confirmed secure or alternative solutions.
- Implement multi-factor authentication (MFA) for NAS access to mitigate risks from credential exposure.
- Maintain comprehensive logging and alerting on NAS device access and API communications to detect suspicious activities early.
Description
CVE-2026-24933 is a high-severity vulnerability in ASUSTOR ADM NAS devices where the API communication component fails to properly validate SSL/TLS certificates. This flaw allows unauthenticated remote attackers to perform Man-in-the-Middle (MitM) attacks, intercepting sensitive data such as account emails, MD5 hashed passwords, and device serial numbers. The vulnerability affects ADM versions 4.1.0 through 4.3.3. ROF1 and 5.0.0 through 5.