CVE-2019-16662

CRITICALNVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2022-05-24. NVD baseline CVSS 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Weaponized
9.8
EchelonGraph verdictPatch this weekExploitation is likely or a public exploit exists.
  • High exploitation likelihood — EPSS 98%
CISA-KEV: Not listedEPSS: 98%CVSS: 9.8Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

An issue was discovered in rConfig 3.9.2. An attacker can directly execute system commands by sending a GET request to ajaxServerSettingsChk.php because the rootUname parameter is passed to the exec function without filtering, which can lead to command execution.

CVSS v3
9.8
EG Score
9.8(medium)
EG Risk
88(Track*)
EG Risk 88/100SSVC: Track*

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity98% × 45%
Exploitation98% × 40%
Automatability30% × 15%
Action: Watch closely — could escalate to Attend.
EPSS
99.9%
KEV
Not listed

Published

October 28, 2019

Last Modified

November 21, 2024

Advisory Details (5)

Auto-updated Jun 22, 2026
No patch confirmed yet.
generic

rConfig-preauth.mp4 - Google Drive

https://drive.google.com/file/d/1bTpTn4-alJ8qGCEATLq-oVM6HbhE65iY/view?usp=sharing
generic

rConfig v3.9.2 authenticated and unauthenticated RCE (CVE-2019-16663) and (CVE-2019-16662) // Askar

https://shells.systems/rconfig-v3-9-2-authenticated-and-unauthenticated-rce-cve-2019-16663-and-cve-2019-16662/
generic

Download rConfig V8 Core | Get backing up in minutes

https://rconfig.com/download
generic

The script exploits a preauth RCE in rConfig v3.9.2 · GitHub

https://gist.github.com/mhaskar/ceb65fa4ca57c3cdccc1edfe2390902e
generic

rConfig-preauth.png - Google Drive

https://drive.google.com/open?id=1OXI5cNuwWqc6y-7BgNCfYHgFPK2cpvnu

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 2× in last 7d / 10× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-07-23 01:41 UTCEG score recompute
  2. 2026-07-22 22:21 UTCEG score recompute
  3. 2026-07-11 08:24 UTCEPSS rescore
  4. 2026-07-11 08:24 UTCEPSS rescore
  5. 2026-07-07 13:43 UTCEPSS rescore
  6. 2026-07-06 16:25 UTCEPSS rescore
  7. 2026-07-06 16:25 UTCEPSS rescore
  8. 2026-07-05 02:27 UTCEPSS rescore
  9. 2026-06-25 13:47 UTCEPSS rescore
  10. 2026-06-25 13:47 UTCEPSS rescore
  11. 2026-06-23 21:31 UTCEPSS rescore
  12. 2026-06-23 21:30 UTCEPSS rescore
  13. 2026-06-15 17:45 UTCEPSS rescore
  14. 2026-05-27 13:38 UTCEPSS rescore
  15. 2026-05-27 12:31 UTCEG score recompute
  16. 2026-05-27 12:31 UTCGHSA enrichment

Publicly available exploits

(5 references)

Working exploit code is in the public domain (1 Metasploit module) (1 GitHub PoC) (2 Exploit-DB entries). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • GitHub PoCmhaskar/CVE-2019-16662
    First seen Nov 10, 2019

    The official exploit for rConfig 3.9.2 Pre-auth Remote Code Execution CVE-2019-16662

    Open source ↗
  • Exploit-DBEDB-47602✓ verified
    First seen Nov 8, 2019

    rConfig - install Command Execution (Metasploit)

    Open source ↗
  • Exploit-DBEDB-47555
    First seen Oct 29, 2019

    rConfig 3.9.2 - Remote Code Execution

    Open source ↗
  • Metasploitexploit/unix/webapp/rconfig_install_cmd_exec✓ verified
    First seen Oct 28, 2019

    rConfig install Command Execution

    Open source ↗
  • Nucleihttp/cves/2019/CVE-2019-16662.yaml
    First seen Jan 1, 2019

    rConfig 3.9.2 - Remote Code Execution

    Open source ↗

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2019-16662?
CVE-2019-16662 is a critical vulnerability published on October 28, 2019. An issue was discovered in rConfig 3.9.2. An attacker can directly execute system commands by sending a GET request to ajaxServerSettingsChk.php because the rootUname parameter is passed to the exec function without filtering, which can lead to command execution.
When was CVE-2019-16662 disclosed?
CVE-2019-16662 was first published in the National Vulnerability Database on October 28, 2019, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2019-16662 actively exploited?
CVE-2019-16662 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 99.9% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2019-16662?
CVE-2019-16662 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2019-16662?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2019-16662, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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