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.

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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
JSON
.