CVE-2024-51299: Draytek Vigor3900 · Command Injection
Source CVE Database V5
Not known to be exploited · CVSS 8.8 High.
Data as of 26 Oct 2026, 17:16 UTC
- EPSS
- 0.6% chance of exploitation in 30 days – higher than 49% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HExploitation evidence
Disclosed: evidence found.
CVE published 30 Oct 2024
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
AI-suggested
To mitigate CVE-2024-51299, organizations should immediately apply any available firmware updates or patches from Draytek once released. In the absence of patches, restrict access to the router's management interfaces by implementing strict firewall rules limiting access to trusted IP addresses only. Disable remote management features if not required. Employ network segmentation to isolate the router from sensitive internal networks and critical assets. Monitor network traffic and device logs for unusual activities indicative of command injection attempts, such as unexpected system commands or abnormal syslog behavior. Use intrusion detection/prevention systems (IDS/IPS) with signatures targeting command injection patterns. Regularly audit device configurations and access controls to ensure least privilege principles are enforced. Additionally, consider deploying network anomaly detection tools to identify potential exploitation attempts early. Organizations should also prepare incident response plans specific to router compromise scenarios to minimize impact if exploitation occurs.
Description
In Draytek Vigor3900 1.5.1.3, attackers can inject malicious commands into mainfunction.cgi and execute arbitrary commands by calling the dumpSyslog function.