CVE-2017-16934

Severity: critical (CVSS 9.8 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 13.5% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2017-11-24 · updated 2026-06-17
Weakness: CWE-78

Description

The web server on DBL DBLTek devices allows remote attackers to execute arbitrary OS commands by obtaining the admin password via a frame.html?content=/dev/mtdblock/5 request, and then using this password for the HTTP Basic Authentication needed for a change_password.csp request, which supports a "<%%25call system.exec:" string in the passwd parameter.

Affected products

Dbltek Web Server: all versions

References

https://blogs.securiteam.com/index.php/archives/3437
https://blogs.securiteam.com/index.php/archives/3437

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