CVE-2025-13549 D-Link DIR-822K formNtp sub_455524 buffer overflow
Remote attackers can trigger a buffer overflow in the NTP configuration interface of D-Link DIR-822K routers, potentially leading to code execution or service disruption.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-13549?
CVE-2025-13549 is a high-severity memory corruption vulnerability in D-Link DIR-822K, published on 23 Nov 2025. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
A vulnerability was found in D-Link DIR-822K 1.00. This issue affects the function sub_455524 of the file /boafrm/formNtp. Performing manipulation of the argument submit-url results in buffer overflow. Remote exploitation of the attack is possible. The exploit has been made public and could be used.
Which versions are affected by CVE-2025-13549?
It affects 1 product.
Products include Dlink Dir-822k Firmware.
How do I fix CVE-2025-13549?
No fix has been published for CVE-2025-13549 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2025-13549 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-13549 exists.
Other vulnerabilities in D-Link DIR-822K
- CVE-2025-13547 D-Link DIR-822K/DWR-M920 formDdns memory corruption
- CVE-2025-13548 D-Link DIR-822K/DWR-M920 formFirewallAdv buffer overflow
- CVE-2025-13550 D-Link DIR-822K/DWR-M920 formVpnConfigSetup buffer overflow
- CVE-2025-13551 D-Link DIR-822K/DWR-M920 formWanConfigSetup buffer overflow
- CVE-2025-13552 D-Link DIR-822K/DWR-M920 formWlEncrypt buffer overflow
Sources
Also known as GHSA-879r-44hc-7fwr.