PT-2026-27368 · 4Mhz · Base64 Decoder

CVE-2019-25634

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Published

2026-03-24

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Updated

2026-06-03

CVSS v3.1

8.4

High

VectorAV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Name of the Vulnerable Software and Affected Versions Base64 Decoder version 1.1.2
Description A stack-based buffer overflow allows local attackers to execute arbitrary code by triggering a structured exception handler (SEH) overwrite. SEH is a mechanism for handling hardware and software exceptions. Attackers can craft a malicious input file that overflows a buffer, overwrites the SEH chain with a POP-POP-RET gadget address, and uses an egghunter payload—a small piece of code used to find a larger shellcode in memory—to locate and execute shellcode for code execution.
Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Memory Corruption

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Weakness Enumeration

Related Identifiers

CVE-2019-25634

Affected Products

Base64 Decoder