Buffer Overflow Vulnerability in YouTube Downloader by LitexMedia
CVE-2021-47775

8.4HIGH

Key Information:

Vendor

Litexmedia

Status
Youtube Video Grabber
Vendor
CVE Published:
15 January 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2021-47775?

The YouTube Downloader version 1.9.9.1 has a buffer overflow vulnerability that can be exploited by attackers to execute arbitrary code on affected systems. By carefully crafting a malicious payload of 712 bytes and manipulating the Structured Exception Handler (SEH), an attacker can establish a bind shell connection on a specified local port, thereby potentially compromising system integrity and security.

Affected Version(s)

YouTube Video Grabber 1.9.9.1

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2021-47775 - Proof of Concept

References

https://www.exploit-db.com/exploits/50471
exploit
https://www.litexmedia.com/youtube-grabber/
product

CVSS V4

Score:
8.4
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Local
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
Unknown

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

Achilles
.