CVE-2019-25689

HIGH

HTML5 Video Player 1.2.5 Local Buffer Overflow Non-SEH

Title source: cna
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2019-25689. PoCs published by Dino Covotsos.

AI-analyzed exploit summary This exploit demonstrates a local buffer overflow in HTML5 Video Player 1.2.5 by overwriting the buffer with a crafted payload containing a NOP sled, shellcode, and a JMP ESP address from shell32.dll. It generates an exploit.txt file that, when pasted into the application's registration key field, triggers the overflow and executes the shellcode.

Description

HTML5 Video Player 1.2.5 contains a local buffer overflow vulnerability that allows attackers to execute arbitrary code by supplying an oversized key code string. Attackers can craft a malicious payload exceeding 997 bytes and paste it into the KEY CODE field in the Help Register dialog to trigger code execution and spawn a calculator process.

Exploits (1)

exploitdb WORKING POC
by Dino Covotsos · pythonlocalwindows
https://www.exploit-db.com/exploits/46279

This exploit demonstrates a local buffer overflow in HTML5 Video Player 1.2.5 by overwriting the buffer with a crafted payload containing a NOP sled, shellcode, and a JMP ESP address from shell32.dll. It generates an exploit.txt file that, when pasted into the application's registration key field, triggers the overflow and executes the shellcode.

Classification
Working Poc 100%
Attack Type
Rce
Complexity
Moderate
Reliability
Reliable
Target: HTML5 Video Player 1.2.5
No auth needed
Prerequisites: Windows XP Prof SP3 ENG x86 · HTML5 Video Player 1.2.5 installed · User interaction to paste payload into registration key field
devstral-2 · analyzed Apr 12, 2026 Full analysis →

References (3)

Core 3
Core References
Exploit exploit
ExploitDB-46279
https://www.exploit-db.com/exploits/46279
Product product
Official Product Homepage
http://www.html5videoplayer.net/download.html
Third Party Advisory third-party-advisory
VulnCheck Advisory: HTML5 Video Player 1.2.5 Local Buffer Overflow Non-SEH
https://www.vulncheck.com/advisories/html5-video-player-local-buffer-overflow-non-seh

Scores

CVSS v3 8.4
EPSS 0.0021
EPSS Percentile 10.7%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment
Exploitation poc
Automatable no
Technical Impact total

Details

CWE
CWE-787
Status published
Products (2)
Html5Videoplayer/HTML5 Video Player 1.2.5
socusoft/html5_video_player 1.2.5
Published Apr 12, 2026
Tracked Since Apr 12, 2026