What is CVE-2022-44256?

CVE-2022-44256 is a high-severity vulnerability in Totolink Nr1800x, classified under Out-of-bounds Write. CVSS score: 8.8/10. Published 2022-11-23.

How severe is CVE-2022-44256?

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

Buffer overflow in Totolink Nr1800x

CVE-2022-44256

TOTOLINK LR350 V9.3.5u.6369_B20220309 contains a post-authentication buffer overflow via parameter lang in the setLanguageCfg function.

Vulnerability class: Buffer Overflow

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

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: 0.022 (81.9th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 82nd percentile — 81.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.021 · newest: 0.022 · change: +0.001

Affected products

Totolink Nr1800x
Totolink Nr1800x Firmware — versions 9.3.5u.6369_b20220309

Weakness classification (CWE)

CWE-787 — Out-of-bounds Write

References

brief-nymphea-813.notion.site/LR350-bof-setLanguageCfg-ddd638b9bb2d4c72b8dba512… (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2022-44256?: CVE-2022-44256 is a high-severity vulnerability in Totolink Nr1800x, classified under Out-of-bounds Write. CVSS score: 8.8/10. Published 2022-11-23.
How severe is CVE-2022-44256?: High severity. CVSS v3 base score is 8.8 out of 10.