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)

Published · last modified .

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.

EPSS exploit prediction

EPSS: 0.048 (91.7th percentile), scored .

Low probability of exploitation in the next 30 days, but still tracked. 92nd percentile — 91.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2018-20122: held from 0.048 to 0.048.

EPSS over last 30 days · oldest: 0.048 · newest: 0.048 · change: 0.000

Affected products

Weakness classification (CWE)

Public proof-of-concept exploits

References

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.