CVE-2025-28020 Memory corruption in n/a
A buffer overflow in the downloadFile.cgi script allows attackers to execute arbitrary code or cause denial of service on TOTOLINK A800R routers.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-28020?
CVE-2025-28020 is a high-severity memory corruption vulnerability in n/a, published on 23 Apr 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
TOTOLINK A800R V4.1.2cu.5137_B20200730 was found to contain a buffer overflow vulnerability in downloadFile.cgi through the v25 parameter.
Weakness: CWE-120
Which versions are affected by CVE-2025-28020?
It affects 1 product.
Products include Totolink A800r Firmware.
How do I fix CVE-2025-28020?
No fix has been published for CVE-2025-28020 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-2025-28020 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-28020 exists.
Other vulnerabilities in n/a
Sources
Also known as GHSA-2cpg-xxmj-g6gp.