CVE-2020-37124

CRITICAL

B64dec 1.1.2 - Buffer Overflow

Title source: llm

Description

B64dec 1.1.2 contains a buffer overflow vulnerability that allows attackers to execute arbitrary code by overwriting Structured Exception Handler (SEH) with crafted input. Attackers can leverage an egg hunter technique and carefully constructed payload to inject and execute malicious code during base64 decoding process.

Exploits (1)

exploitdb WORKING POC
by Andy Bowden · pythonlocalwindows
https://www.exploit-db.com/exploits/48317

Scores

CVSS v3 9.8
EPSS 0.0008
EPSS Percentile 22.9%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Details

CWE
CWE-121
Status published
Products (1)
4Mhz/B64dec 1.1.2
Published Feb 05, 2026
Tracked Since Feb 18, 2026