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Vulnerability record · CVE-2019-25689 · published 12 April 2026

CVE-2019-25689: Socusoft html5 video player out-of-bounds write vulnerability

SSocusoft · Html5 Video Player

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.

8.6 CVSS 4.0 High EPSS 0.21% · top 90.5% CWE-787 · Out-of-bounds write
8.6CVSS 4.0 base score
0.21%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
3References, 1 tagged exploit
17 Jun 2026Last modified by NVD

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.

CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/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:

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://www.html5videoplayer.net/download.html Product
https://www.exploit-db.com/exploits/46279 ExploitVDB Entry
https://www.vulncheck.com/advisories/html5-video-player-local-buffer-overflow-non-seh Third Party Advisory

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Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2019-25689), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.