What is CVE-2026-30649?

CVE-2026-30649 is a high-severity vulnerability in Vivotek Fd8136, classified under Stack-based Buffer Overflow. CVSS score: 7.3/10. Published 2026-06-02.

How severe is CVE-2026-30649?

High severity. CVSS v3 base score is 7.3 out of 10.

Buffer overflow in Vivotek Fd8136

CVE-2026-30649

Buffer Overflow vulnerability in VIVOTEK INC FD8136-VVTK-0300a allows a remote attacker to execute arbitrary code via the set_getparam.cgi component

Vulnerability class: Buffer Overflow

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

CVSS v3 metric

CVSS v3 base score 7.3 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L.

EPSS exploit prediction

EPSS: 0.005 (39.8th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 40th percentile — 39.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.004 · newest: 0.005 · change: +0.001

Affected products

Vivotek Fd8136
Vivotek Fd8136 Firmware — versions 0300a

Weakness classification (CWE)

CWE-121 — Stack-based Buffer Overflow

References

vivotek.com (Product)
github.com/xchg-rax-rax/vulnerability-research/tree/main/CVE-2026-30649 (Third Party Advisory)

Frequently asked questions

What is CVE-2026-30649?: CVE-2026-30649 is a high-severity vulnerability in Vivotek Fd8136, classified under Stack-based Buffer Overflow. CVSS score: 7.3/10. Published 2026-06-02.
How severe is CVE-2026-30649?: High severity. CVSS v3 base score is 7.3 out of 10.