CVE-2018-25304 Free Download Manager 2.0 Build 417 Local Buffer Overflow SEH
Attackers can execute arbitrary code by tricking users into importing a malicious URL file, causing a buffer overflow in Free Download Manager.
- 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-2018-25304?
CVE-2018-25304 is a high-severity memory corruption vulnerability in Filehippo Free Download Manager, published on 29 Apr 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Free Download Manager 2.0 Build 417 contains a local buffer overflow vulnerability in the URL import functionality that allows attackers to trigger a structured exception handler (SEH) chain exploitation. Attackers can craft a malicious URL file that, when imported through the File > Import > Import lists of downloads menu, causes a buffer overflow in the Location header response that overwrites the SEH chain and executes arbitrary code.
Weakness: CWE-120
Which versions are affected by CVE-2018-25304?
How do I fix CVE-2018-25304?
No fix has been published for CVE-2018-25304 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-2018-25304 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2018-25304 exists.
Sources
Also known as GHSA-cm7p-95v3-q34h.