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Vulnerability record · CVE-2017-16934 · published 24 November 2017

CVE-2017-16934: Dbltek web server os command injection vulnerability

Dbltek · Web Server

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.

9.8 CVSS 3.0 Critical EPSS 13% · top 3.7% CWE-78 · OS command injection
9.8CVSS 3.0 base score, v2 10.0
13%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
2References, 2 tagged exploit
17 Jun 2026Last modified by NVD

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.

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://blogs.securiteam.com/index.php/archives/3437 ExploitThird Party Advisory
https://blogs.securiteam.com/index.php/archives/3437 ExploitThird Party Advisory

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Source: NIST National Vulnerability Database (record CVE-2017-16934), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.