What is CVE-2020-22724?

CVE-2020-22724 is a critical-severity vulnerability in Mercury Mer1200, classified under OS Command Injection. CVSS score: 9.8/10. Published 2021-10-14.

How severe is CVE-2020-22724?

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

Is CVE-2020-22724 known to be exploited?

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

RCE in Mercury Mer1200

CVE-2020-22724

A remote command execution vulnerability exists in add_server_service of PPTP_SERVER in Mercury Router MER1200 v1.0.1 and Mercury Router MER1200G v1.0.1.

Vulnerability class: Command Injection (OS Command Injection)

Published 2021-10-14 · 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: 0.056 (92.6th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 93rd percentile — 92.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.056 · newest: 0.056 · change: 0.000

Affected products

Mercury Mer1200
Mercury Mer1200 Firmware — versions 1.0.1
Mercury Mer1200g
Mercury Mer1200g Firmware — versions 1.0.1

Weakness classification (CWE)

CWE-78 — OS Command Injection

Public proof-of-concept exploits

Live-Hack-CVE/CVE-2020-22724

References

cwe.mitre.org/data/definitions/78.html (Third Party Advisory)
github.com/DarkEyeR/CVE_Apply/blob/master/Mercury/Mercury MER1200 Router v1.0.1… (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2020-22724?: CVE-2020-22724 is a critical-severity vulnerability in Mercury Mer1200, classified under OS Command Injection. CVSS score: 9.8/10. Published 2021-10-14.
How severe is CVE-2020-22724?: Critical severity. CVSS v3 base score is 9.8 out of 10.
Is CVE-2020-22724 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.