CVE-2018-20377: Orange Livebox 00.96.320S devices allow remote attackers to discover Wi-Fi credentials via /get_getnetworkconf

This week

CRITICAL 9.8REMOTEMITIGATE

CVE-2018-20377 is a critical-severity flaw (CVSS 9.8) affecting arv7519rw22 livebox 2.1 firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Orange Livebox 00.96.320S devices allow remote attackers to discover Wi-Fi credentials via /get_getnetworkconf.cgi on port 8080, leading to full control if the admin password equals the Wi-Fi password or has the default admin value. This is related to Firmware 01.11.2017-11:43:44, Boot v0.70.03, Modem 5.4.1.10.1.1A, Hardware 02, and Arcadyan ARV7519RW22-A-L T VR9 1.2.

Why this priority

Critical severity
EPSS top 5%: very likely to be exploited
Public exploit reference
Remotely exploitable, no login, no user action

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	7.7% (top 5%)
CISA exploited list	No
Published	2018-12-23
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: orange

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2018-12-23 18:29 UTCPublished CVE record published
2026-06-17 01:52 UTCUpdated Record last modified

orange arv7519rw22 livebox 2.1 firmware MITIGATE

Affected: 00.96.00.96.609es · 00.96.00.96.613 · 00.96.217 · 00.96.321s

Fixed in: no fixed release known

Safe to downgrade to: a release before 00.96.00.96.609es

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2018-20377?

arv7519rw22 livebox 2.1 firmware: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2018-20377 being exploited?

CVE-2018-20377 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2018-20377 affect?

CVE-2018-20377 affects arv7519rw22 livebox 2.1 firmware. Severity is critical (CVSS 9.8). Orange Livebox 00.96.320S devices allow remote attackers to discover Wi-Fi credentials via /get_getnetworkconf.cgi on port 8080, leading to full control if the admin password equals the Wi-Fi password or has the default admin value. This is

How urgent is CVE-2018-20377?

Priority 68/100. Critical severity; EPSS top 5%: very likely to be exploited; Public exploit reference; Remotely exploitable, no login, no user action

Software pages

Wi-Fi vulnerabilities

Related CVEs

CVE-2018-20577 CRITICAL 9.1 MITIGATE Orange Livebox 00.96.320S devices allow cgi-bin/restore.exe, cgi-bin/firewall_SPI.exe, cgi-bin/setup_remote_mg
CVE-2018-20576 MEDIUM 5.4 MITIGATE Orange Livebox 00.96.320S devices allow cgi-bin/autodialing.exe and cgi-bin/phone_test.exe CSRF, leading to ar
CVE-2018-20575 HIGH 7.5 MITIGATE Orange Livebox 00.96.320S devices have an undocumented /system_firmwarel.stm URI for manual firmware update

References

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