CVE-2025-8231 D-Link DIR-890L UART Port rgbin hard-coded credentials
Attackers with physical access can exploit hard-coded UART credentials to gain privileged control over the D-Link DIR-890L router.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-8231?
CVE-2025-8231 is a high-severity vulnerability in D-Link DIR-890L, published on 27 Jul 2025. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
A vulnerability, which was classified as critical, has been found in D-Link DIR-890L up to 111b04. This issue affects some unknown processing of the file rgbin of the component UART Port. The manipulation leads to hard-coded credentials. It is possible to launch the attack on the physical device. The exploit has been disclosed to the public and may be used. This vulnerability only affects products that are no longer supported by the maintainer.
Which versions are affected by CVE-2025-8231?
It affects 1 product.
Products include Dlink Dir-890l Firmware.
How do I fix CVE-2025-8231?
No fix has been published for CVE-2025-8231 yet. Limit exposure of the affected software until one is available.
Is CVE-2025-8231 being exploited?
There is no known exploitation of CVE-2025-8231 in the wild and no public exploit code.
Other vulnerabilities in D-Link DIR-890L
Sources
Also known as GHSA-85q8-9fqg-6jwh.