// For flags

CVE-2019-25689

HTML5 Video Player 1.2.5 Local Buffer Overflow Non-SEH

Severity Score

8.6
*CVSS v4

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

1
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

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.

*Credits: Dino Covotsos - Telspace Systems
CVSS Scores
Attack Vector
Local
Attack Complexity
Low
Attack Requirements
None
Privileges Required
None
User Interaction
None
System
Vulnerable | Subsequent
Confidentiality
High
None
Integrity
High
None
Availability
High
None
Attack Vector
Local
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2026-04-05 CVE Reserved
  • 2026-04-12 CVE Published
  • 2026-04-13 CVE Updated
  • 2026-04-13 EPSS Updated
  • 2026-04-13 First Exploit
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
CWE
  • CWE-787: Out-of-bounds Write
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Html5Videoplayer
Search vendor "Html5Videoplayer"
 HTML5 Video Player
Search vendor "Html5Videoplayer" for product "HTML5 Video Player"
 1.2.5
Search vendor "Html5Videoplayer" for product "HTML5 Video Player" and version "1.2.5"
en
Affected