Buffer overflow in Html5videoplayer Html5 Video Player
CVE-2019-25689
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.
Vulnerability class: Buffer Overflow
EPSS: 0.002 (10.9th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 8.4 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Html5videoplayer Html5 Video Player — versions 1.2.5
- Socusoft Html5_video_player — versions 1.2.5
Weakness classification (CWE)
References
- disclosure@vulncheck.com (Exploit, VDB Entry, exploit)
- disclosure@vulncheck.com (Product, product)
- disclosure@vulncheck.com (Third Party Advisory, third-party-advisory)
Frequently asked questions
- What is CVE-2019-25689?
- CVE-2019-25689 is a high-severity vulnerability in Html5videoplayer Html5 Video Player, classified under Out-of-bounds Write. CVSS score: 8.4/10. Published 2026-04-12.
- How severe is CVE-2019-25689?
- High severity. CVSS v3 base score is 8.4 out of 10.