CVE-2021-47775 YouTube Video Grabber 1.9.9.1 - Buffer Overflow (SEH)
Attackers can execute arbitrary code via a buffer overflow in YouTube Video Grabber by overwriting the Structured Exception Handler with a malicious payload.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2021-47775?
CVE-2021-47775 is a high-severity memory corruption vulnerability in Litexmedia YouTube Video Grabber, published on 15 Jan 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Official description
YouTube Video Grabber, now referred to as YouTube Downloader, 1.9.9.1 contains a buffer overflow vulnerability that allows attackers to execute arbitrary code by overwriting the Structured Exception Handler. Attackers can craft a malicious payload of 712 bytes with SEH manipulation to trigger a bind shell connection on a specified local port.
Weakness: CWE-787
Which versions are affected by CVE-2021-47775?
How do I fix CVE-2021-47775?
No fix has been published for CVE-2021-47775 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-2021-47775 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2021-47775 exists.
Sources
Also known as GHSA-43mg-fm9r-vj2p.