CVE-2020-37124
HIGH EPSS 27.2%
Published Feb 5, 20264mo ago · Modified Jun 17, 20261w ago
8.4 CVSS 4.0
Published Feb 5, 2026 4mo ago
Last Modified Jun 17, 2026 1w ago
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.
CVSS Details
Base Score
Exploitability
Impact
Vector string
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X Attack Vector Local
Attack Complexity Low
Privileges Required None
User Interaction A
Scope X
Threat Intelligence
EPSS Exploit Probability
27.2% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available
Weaknesses 1
CWE-121
References 3
- 4mhz.de http://4mhz.de/b64dec.html
- exploit-db.com https://www.exploit-db.com/exploits/48317
- vulncheck.com https://www.vulncheck.com/advisories/bdec-buffer-overflow-seh-overflow-egg-hunter
Remediation
No remediation data recorded yet
Check vendor advisories and the NVD entry for patch availability.