What is CVE-2026-30650?

CVE-2026-30650 is a high-severity vulnerability in Vivotek Fd8136, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 8.8/10. Published 2026-06-02.

How severe is CVE-2026-30650?

High severity. CVSS v3 base score is 8.8 out of 10.

Buffer overflow in Vivotek Fd8136

CVE-2026-30650

A post-authentication remote buffer overflow vulnerability exists in the /cgi-bin/admin/eventtask.cgi endpoint of the admin interface of Vivotek FD8136 cameras running firmware version FD8136-VVTK-0300a. This flaw allows an authenticated attacker to execute arbitrary code as root on the device remotely.

Vulnerability class: Buffer Overflow

Published 2026-06-02 · last modified 2026-07-22.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.009 (57.8th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 58th percentile — 57.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.006 · newest: 0.009 · change: +0.003

Affected products

Vivotek Fd8136
Vivotek Fd8136 Firmware — versions 0300a

Weakness classification (CWE)

CWE-120 — Buffer Copy without Checking Size of Input (Classic Buffer Overflow)

References

vivotek.com (Product)
github.com/xchg-rax-rax/vulnerability-research/tree/main/CVE-2026-30650 (Third Party Advisory)

Frequently asked questions

What is CVE-2026-30650?: CVE-2026-30650 is a high-severity vulnerability in Vivotek Fd8136, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 8.8/10. Published 2026-06-02.
How severe is CVE-2026-30650?: High severity. CVSS v3 base score is 8.8 out of 10.