RCE in Dlink Dir-823g
CVE-2025-60671
A command injection vulnerability exists in the D-Link DIR-823G router firmware DIR823G_V1.0.2B05_20181207.bin in the timelycheck and sysconf binaries, which process the /var/system/linux_vlan_reinit file. The vulnerability occurs because content read from this file is only partially validated for a prefix and then formatted using vsnprintf() before being executed with system(), allowing an attacker with write access to /var/system/linux_vlan_reinit to execute arbitrary commands on the device.
Vulnerability class: Command Injection (OS Command Injection)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N.
EPSS exploit prediction
EPSS: 0.014 (72.0th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 72nd percentile — 72.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.014 · newest: 0.014 · change: 0.000
Affected products
- Dlink Dir-823g
- Dlink Dir-823g Firmware — versions 1.0.2b05_20181207
Weakness classification (CWE)
References
- d-link.com (Product)
- www.dlink.com/en/security-bulletin/ (Vendor Advisory)
- www.dlink.com/en (Product)
- github.com/yifan20020708/SGTaint-0-day/blob/main/DLink/DLink-DIR-823G/CVE-2025-… (Exploit, Third Party Advisory)
Frequently asked questions
- What is CVE-2025-60671?
- CVE-2025-60671 is a medium-severity vulnerability in Dlink Dir-823g, classified under Command Injection. CVSS score: 5.4/10. Published 2025-11-13.
- How severe is CVE-2025-60671?
- Medium severity. CVSS v3 base score is 5.4 out of 10.