What is CVE-2022-44255?

CVE-2022-44255 is a critical-severity vulnerability in Totolink Lr350, classified under Out-of-bounds Write. CVSS score: 9.8/10. Published 2022-11-23.

How severe is CVE-2022-44255?

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

Buffer overflow in Totolink Lr350

CVE-2022-44255

TOTOLINK LR350 V9.3.5u.6369_B20220309 contains a pre-authentication buffer overflow in the main function via long post data.

Vulnerability class: Buffer Overflow

Published 2022-11-23 · last modified 2026-06-17.

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: 0.023 (82.4th percentile), scored 2026-09-30.

Low probability of exploitation in the next 30 days, but still tracked. 82nd percentile — 82.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.022 · newest: 0.023 · change: +0.001

Affected products

Totolink Lr350
Totolink Lr350 Firmware — versions 9.3.5u.6369_b20220309

Weakness classification (CWE)

CWE-787 — Out-of-bounds Write

References

brief-nymphea-813.notion.site/LR350-bof-main-pre-authentication-9475d39331cd4d8… (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2022-44255?: CVE-2022-44255 is a critical-severity vulnerability in Totolink Lr350, classified under Out-of-bounds Write. CVSS score: 9.8/10. Published 2022-11-23.
How severe is CVE-2022-44255?: Critical severity. CVSS v3 base score is 9.8 out of 10.