CVE-2019-16639: An issue was found on the Ruijie EG-2000 series gateway

This week

CRITICAL 9.8REMOTEMITIGATE

CVE-2019-16639 is a critical-severity flaw (CVSS 9.8) affecting eg-2000se firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

An issue was found on the Ruijie EG-2000 series gateway. There is a newcli.php API interface without access control, which can allow an attacker (who only has web interface access) to use TELNET commands and/or show admin passwords via the mode_url=exec&command= substring. This affects EG-2000SE EG_RGOS 11.9 B11P1.

Why this priority

Critical severity
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	0.8% (top 43%)
CISA exploited list	No
Weakness	CWE-78
Published	2024-07-16
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: ruijie

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

Am I affected?

Timeline

2024-07-16 17:15 UTCPublished CVE record published
2026-06-17 02:22 UTCUpdated Record last modified

ruijie eg-2000se firmware MITIGATE

Affected: 11.9_b11p1

Fixed in: no fixed release known

Safe to downgrade to: a release before 11.9_b11p1

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-2019-16639?

eg-2000se firmware: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2019-16639 being exploited?

CVE-2019-16639 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-2019-16639 affect?

CVE-2019-16639 affects eg-2000se firmware. Severity is critical (CVSS 9.8). An issue was found on the Ruijie EG-2000 series gateway. There is a newcli.php API interface without access control, which can allow an attacker (who only has web interface access) to use TELNET commands and/or show admin passwords via the

How urgent is CVE-2019-16639?

Priority 59/100. Critical severity; Public exploit reference; Remotely exploitable, no login, no user action

Software pages

PHP vulnerabilities

Related CVEs

CVE-2019-16641 HIGH 8.4 MITIGATE An issue was found on the Ruijie EG-2000 series gateway
CVE-2019-16640 HIGH 7.5 MITIGATE An issue was found in upload.php on the Ruijie EG-2000 series gateway
CVE-2019-16638 HIGH 7.5 MITIGATE An issue was found on the Ruijie EG-2000 series gateway

References

← Back to latest CVEs