What is CVE-2022-40055?

CVE-2022-40055 is a critical-severity vulnerability in Gxgroup Gpon Ont Titanium 2122a, classified under Improper Restriction of Excessive Authentication Attempts. CVSS score: 9.8/10. Published 2022-10-17.

How severe is CVE-2022-40055?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Vulnerability in Gxgroup Gpon Ont Titanium 2122a

CVE-2022-40055

An issue in GX Group GPON ONT Titanium 2122A T2122-V1.26EXL allows attackers to escalate privileges via a brute force attack at the login page.

Published 2022-10-17 · last modified 2026-07-09.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.007 (50.6th percentile), scored 2026-10-01.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 51st percentile — 50.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.007 · newest: 0.007 · change: +0.000

Affected products

Gxgroup Gpon Ont Titanium 2122a — versions c40-210
Gxgroup Gpon Ont Titanium 2122a Firmware — versions t2122-v1.26exl

Weakness classification (CWE)

CWE-307 — Improper Restriction of Excessive Authentication Attempts

References

af854a3a-2127-422b-91ae-364da2661108 (Not Applicable)
af854a3a-2127-422b-91ae-364da2661108 (Broken Link)
blog.alphathreat.in/index.php (Third Party Advisory)

Frequently asked questions

What is CVE-2022-40055?: CVE-2022-40055 is a critical-severity vulnerability in Gxgroup Gpon Ont Titanium 2122a, classified under Improper Restriction of Excessive Authentication Attempts. CVSS score: 9.8/10. Published 2022-10-17.
How severe is CVE-2022-40055?: Critical severity. CVSS v3 base score is 9.8 out of 10.