CVE-2019-25689CWE-787

HTML5 Video Player 1.2.5 Local Buffer Overflow Non-SEH

High · published April 12, 2026

CVSS v4.0
8.6
EPSS
0%
Percentile
10.1
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v4.0
8.6 · HIGH
Vector
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
EPSS
0.00206 · 10.1th percentile
Weakness
CWE-787 · Out-of-bounds Write
Published
2026-04-12T12:28Z
EPSS history
Timeline
  • 12 APR 12:28Z
    HTML5 Video Player 1.2.5 Local Buffer Overflow Non-SEH
    cvelistv5