CVE-2019-25689

HTML5 Video Player 1.2.5 Local Buffer Overflow Non-SEH

CVSS 8.6 HIGHEPSS 0.2%CWE-787

Vexday Risk Score

41Attention

SSVC decision (CISA)

Attend

PoC available → attend closely

Exploit maturity

Proof of concept

Public proof of concept exists, but not yet automated.

CVSS 8.6EPSS 0.2%KEV nãoPoC públicaNuclei —Metasploit —Patch —

Lifecycle

12 Apr 2026Published on NVD

Recommendation: Plan a near-term fix — a public PoC already exists.

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

Affected products

Html5Videoplayer · HTML5 Video Player

public PoCs found — 1

cve_referencewww.exploit-db.com/exploits/46279unverified

⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.

References

https://www.exploit-db.com/exploits/46279 https://www.vulncheck.com/advisories/html5-video-player-local-buffer-overflow-non-seh http://www.html5videoplayer.net/download.html