Command Injection Vulnerability Exists
Source GCVE Database
Not known to be exploited · CVSS 5.4 Medium.
Data as of 13 Nov 2026, 18:53 UTC
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:NExploitation evidence
Disclosed: evidence found.
CVE published 13 Nov 2025
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: 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 13 Nov 2026.
What to do
AI-suggested
Until a fix is available, restrict write access to /var/system/linux_vlan_reinit to trusted users only to prevent exploitation.
Description
A command injection vulnerability exists in the D-Link DIR-823G router firmware version DIR823G_V1.0.2B05_20181207.bin. The flaw is in the timelycheck and sysconf binaries that process the /var/system/linux_vlan_reinit file. Because the content from this file is only partially validated before being passed to system(), an attacker with write access to this file can execute arbitrary commands on the device.