What is CVE-2018-20122?

CVE-2018-20122 is a critical-severity vulnerability in Fastweb Fastgate, classified under OS Command Injection. CVSS score: 9.8/10. Published 2019-02-21.

How severe is CVE-2018-20122?

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

Is CVE-2018-20122 known to be exploited?

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

RCE in Fastweb Fastgate

CVE-2018-20122

The web interface on FASTGate Fastweb devices with firmware through 0.00.47_FW_200_Askey 2017-05-17 (software through 1.0.1b) exposed a CGI binary that is vulnerable to a command injection vulnerability that can be exploited to achieve remote code execution with root privileges. No authentication is required in order to trigger the vulnerability.

Vulnerability class: Command Injection (OS Command Injection)

EPSS: 0.048 (91.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Weakness classification (CWE)

CWE-78 — OS Command Injection

Public proof-of-concept exploits

References

cve@mitre.org (Third Party Advisory, x_refsource_MISC)

Frequently asked questions

What is CVE-2018-20122?: CVE-2018-20122 is a critical-severity vulnerability in Fastweb Fastgate, classified under OS Command Injection. CVSS score: 9.8/10. Published 2019-02-21.
How severe is CVE-2018-20122?: Critical severity. CVSS v3 base score is 9.8 out of 10.
Is CVE-2018-20122 known to be exploited?: 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.