What is CVE-2026-20766?

CVE-2026-20766 is a high-severity vulnerability in Milesight Ms-C2964-Rflpc, classified under Heap-based Buffer Overflow. CVSS score: 8.8/10. Published 2026-04-28.

How severe is CVE-2026-20766?

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

Buffer overflow in Milesight Ms-C2964-Rflpc

CVE-2026-20766

An out-of-bounds memory access vulnerability exists in specific firmware versions of Milesight AIOT cameras.

Vulnerability class: Buffer Overflow

Published 2026-04-28 · last modified 2026-07-20.

CVSS v3 metric

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

EPSS exploit prediction

EPSS: 0.003 (19.2th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 19th percentile — 19.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000

Affected products

Milesight Ms-C2964-Rflpc — versions 0
Milesight Ms-C2966-Rflwpc — versions 0
Milesight Ms-C2966-X12rlpc — versions 0
Milesight Ms-C2966-X12rlvpc — versions 0
Milesight Ms-C2972-Rflpc — versions 0
Milesight Ms-C5321-Fpe — versions 0
Milesight Ms-C5361-X12lpc — versions 0
Milesight Ms-C5366-X12lpc — versions 0
Milesight Ms-C5366-X12lvpc — versions 0
Milesight Ms-C8477-Hpg1 — versions 0

Weakness classification (CWE)

CWE-122 — Heap-based Buffer Overflow

References

Frequently asked questions

What is CVE-2026-20766?: CVE-2026-20766 is a high-severity vulnerability in Milesight Ms-C2964-Rflpc, classified under Heap-based Buffer Overflow. CVSS score: 8.8/10. Published 2026-04-28.
How severe is CVE-2026-20766?: High severity. CVSS v3 base score is 8.8 out of 10.