Auth bypass in Dlink Dir-605l
CVE-2025-65731
An issue was discovered in D-Link Router DIR-605L (Hardware version F1; Firmware version: V6.02CN02) allowing an attacker with physical access to the UART pins to execute arbitrary commands due to presence of root terminal access on a serial interface without proper access control.
Vulnerability class: Broken Authentication
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.8 (Medium). Vector: CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.004 (35.4th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 35th percentile — 35.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: +0.000
Affected products
- Dlink Dir-605l — versions f1
- Dlink Dir-605l Firmware — versions 6.02cn02
Weakness classification (CWE)
Public proof-of-concept exploits
References
- www.dlink.com/en/security-bulletin/ (Product)
- www.dlink.com/uk/en/products/dir-605l-wireless-n-300-home-cloud-router (Product)
- gist.github.com/whitej3rry/f142a93bac360f9b1126f552f64957ea (Exploit, Third Party Advisory)
- github.com/whitej3rry/CVE-2025-65731 (Exploit, Third Party Advisory)
Frequently asked questions
- What is CVE-2025-65731?
- CVE-2025-65731 is a medium-severity vulnerability in Dlink Dir-605l, classified under Missing Authentication for Critical Function. CVSS score: 6.8/10. Published 2026-01-08.
- How severe is CVE-2025-65731?
- Medium severity. CVSS v3 base score is 6.8 out of 10.
- Is CVE-2025-65731 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.