What is CVE-2022-25077?

CVE-2022-25077 is a critical-severity vulnerability in Totolink A3100r, classified under OS Command Injection. CVSS score: 9.8/10. Published 2022-02-24.

How severe is CVE-2022-25077?

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

RCE in Totolink A3100r

CVE-2022-25077

TOTOLink A3100R V4.1.2cu.5050_B20200504 was discovered to contain a command injection vulnerability in the "Main" function. This vulnerability allows attackers to execute arbitrary commands via the QUERY_STRING parameter.

Vulnerability class: Command Injection (OS Command Injection)

Published 2022-02-24 · 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: 0.326 (98.3th percentile), scored 2026-09-30.

Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 98th percentile — 98.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.326 · newest: 0.326 · change: 0.000

Affected products

Totolink A3100r
Totolink A3100r Firmware — versions 4.1.2cu.5050_b20200504

Weakness classification (CWE)

CWE-78 — OS Command Injection

References

github.com/EPhaha/IOT_vuln/blob/main/TOTOLink/A3100R/README.md (Exploit, Patch, Third Party Advisory)

Frequently asked questions

What is CVE-2022-25077?: CVE-2022-25077 is a critical-severity vulnerability in Totolink A3100r, classified under OS Command Injection. CVSS score: 9.8/10. Published 2022-02-24.
How severe is CVE-2022-25077?: Critical severity. CVSS v3 base score is 9.8 out of 10.