What is CVE-2022-40111?

CVE-2022-40111 is a critical-severity vulnerability in Totolink A3002r, classified under Use of Hard-coded Credentials. CVSS score: 9.8/10. Published 2022-09-06.

How severe is CVE-2022-40111?

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

Is CVE-2022-40111 known to be exploited?

2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Vulnerability in Totolink A3002r

CVE-2022-40111

In TOTOLINK A3002R TOTOLINK-A3002R-He-V1.1.1-B20200824.0128 in the shadow.sample file, root is hardcoded in the firmware.

Published 2022-09-06 · 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: 0.009 (57.5th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 57th percentile — 57.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.008 · newest: 0.009 · change: +0.001

Affected products

Totolink A3002r
Totolink A3002r Firmware — versions 1.1.1-b20200824.0128

Weakness classification (CWE)

CWE-798 — Use of Hard-coded Credentials

Public proof-of-concept exploits

References

github.com/1759134370/iot/blob/main/TOTOLINK/A3002R/4.md (Third Party Advisory, Broken Link)

Frequently asked questions

What is CVE-2022-40111?: CVE-2022-40111 is a critical-severity vulnerability in Totolink A3002r, classified under Use of Hard-coded Credentials. CVSS score: 9.8/10. Published 2022-09-06.
How severe is CVE-2022-40111?: Critical severity. CVSS v3 base score is 9.8 out of 10.
Is CVE-2022-40111 known to be exploited?: 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.