What is CVE-2022-37077?

CVE-2022-37077 is a high-severity vulnerability in Totolink A7000r, classified under Out-of-bounds Write. CVSS score: 7.8/10. Published 2022-08-25.

How severe is CVE-2022-37077?

High severity. CVSS v3 base score is 7.8 out of 10.

Buffer overflow in Totolink A7000r

CVE-2022-37077

TOTOLINK A7000R V9.1.0u.6115_B20201022 was discovered to contain a stack overflow via the pppoeUser parameter.

Vulnerability class: Buffer Overflow

Published 2022-08-25 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.003 (25.1th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 25th percentile — 25.1% 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

Totolink A7000r
Totolink A7000r Firmware — versions 9.1.0u.6115_b20201022

Weakness classification (CWE)

CWE-787 — Out-of-bounds Write

References

github.com/Darry-lang1/vuln/tree/main/TOTOLINK/A7000R/9 (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2022-37077?: CVE-2022-37077 is a high-severity vulnerability in Totolink A7000r, classified under Out-of-bounds Write. CVSS score: 7.8/10. Published 2022-08-25.
How severe is CVE-2022-37077?: High severity. CVSS v3 base score is 7.8 out of 10.