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, 09:16 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
1. Immediately restrict network access to ASUSTOR ADM management interfaces, limiting exposure to trusted internal networks or VPNs only. 2. Monitor network traffic for signs of TLS interception or anomalies indicative of MitM attacks, using intrusion detection systems or network security monitoring tools. 3. Employ network segmentation to isolate NAS devices from general user networks, reducing the attack surface. 4. Enforce strong authentication and access controls on NAS devices to limit potential lateral movement if credentials are compromised. 5. Regularly audit and update device firmware and software; although no patches are currently linked, stay alert for official ASUSTOR updates addressing this vulnerability. 6. Consider deploying endpoint protection solutions capable of detecting unusual network behaviors related to certificate validation failures. 7. Educate IT staff about the risks of improper certificate validation and the importance of verifying SSL/TLS configurations. 8. Where possible, replace or upgrade devices running vulnerable ADM versions to versions confirmed secure or alternative solutions. 9. Implement multi-factor authentication (MFA) for NAS access to mitigate risks from credential exposure. 10. 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.