Cyber Resilience

CVE-2019-15107

RCE in Webmin ≤ 1.920

CISA KEVActive ExploitationEUVD ExploitedPublic PoCRansomware-linkedRCECommand Injection
Published
16 August 2019
Modified
06 August 2026
KEV Added
25 March 2022
Patch / advisory
View advisory
CVSS Score v3.1 9.8
Click a component to see what it means
Raw vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS Score 0.99 100.0th percentile
Risk Priority 97 floored blend · peak EPSS

Summary

CVE-2019-15107 is a critical-severity OS Command Injection (CWE-78) vulnerability in Webmin Webmin. Its CVSS base score is 9.8 (Critical).

Operationally, exploitation aligns with the MITRE ATT&CK technique Command and Scripting Interpreter (T1059); ranked in the top 0.0% of CVEs by exploit likelihood; CISA has added it to the Known Exploited Vulnerabilities catalog; a public proof-of-concept is referenced.

Deeper analysis AI-assisted summary

Synthesised by an AI model from the NVD description and linked references — a reading aid, not an authoritative source.

CVE-2019-15107 is a command injection vulnerability (CWE-78) affecting Webmin versions up to and including 1.920. The flaw resides in the "old" parameter of the password_change.cgi script, which fails to properly sanitize input before passing it to a system command.

The vulnerability can be exploited remotely by unauthenticated attackers over the network. Successful exploitation grants full control over the affected system, allowing arbitrary command execution with impacts to confidentiality, integrity, and availability, as reflected in its CVSS 3.1 base score of 9.8.

Public exploit code for this issue has been disclosed on multiple platforms, including detailed remote code execution and backdoor variants targeting the unauthenticated password change endpoint. No official patch or mitigation details are provided in the available references.

OWASP Top 10 for Web (2025)

A05:2025 Injection

EU & UK References

Vulnerability Data

An issue was discovered in Webmin <=1.920. The parameter old in password_change.cgi contains a command injection vulnerability.

CWE(s)
CWE-78
KEV Date Added
25 March 2022

Related Threats

MITRE ATT&CK Enterprise Techniques

T1059 Command and Scripting Interpreter Execution
Adversaries may abuse command and script interpreters to execute commands, scripts, or binaries.
attack.mitre.org →
T1059.003 Windows Command Shell Execution
Adversaries may abuse the Windows command shell for execution.
attack.mitre.org →
T1059.004 Unix Shell Execution
Adversaries may abuse Unix shell commands and scripts for execution.
attack.mitre.org →
T1059.001 PowerShell Execution
Adversaries may abuse PowerShell commands and scripts for execution.
attack.mitre.org →
T1190 Exploit Public-Facing Application Initial Access
Adversaries may attempt to exploit a weakness in an Internet-facing host or system to initially access a network.
attack.mitre.org →
Derived from this CVE’s CWE(s) via the direct CWE→ATT&CK cross-walk.

CVEs Like This One

CVE-2024-12828Same product: Webmin Webmin
CVE-2019-12840Same product: Webmin Webmin
CVE-2026-56021Same product: Webmin Webmin
CVE-2022-36446Same product: Webmin Webmin
CVE-2024-36452Same product: Webmin Webmin
CVE-2023-38307Same product: Webmin Webmin
CVE-2023-40986Same product: Webmin Webmin
CVE-2023-38303Same product: Webmin Webmin
CVE-2023-38310Same product: Webmin Webmin
CVE-2023-38304Same product: Webmin Webmin

Affected Assets

webmin
webmin
≤ 1.920

Mitigating Controls

Control response

Prevent
Stop it (NIST 800-53)

—

Detect
Catch it (NIST detect / respond)

—

Harden
Shrink the surface (DISA STIG)

—

Validate
Prove the fix (OWASP ASVS)
  • V1.2.5
  • V1.2.8
  • V15.2.5

Likely Mitigating Controls AI

Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.

SC-27 Platform-independent Applications
addresses: CWE-78

Platform-independent apps typically execute inside a managed runtime or sandbox that restricts direct OS command execution, reducing the ability to exploit OS command injection.

SI-10 Information Input Validation
addresses: CWE-78

Validates inputs to block special elements that would alter OS command execution.

Mitigating Controls (NIST CSF 2.0) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→CSF cross-walk (authority under review) — links open the control.

PR.PS-06 mostly match
prevents

PR.PS-06's SDLC practices directly require secure coding and input handling that blocks command-injection defects, yet the single broad outcome leaves many specific neutralization vectors and verification gaps unaddressed.

PR.PS-02 partial match
prevents

Routine patching/maintenance can remediate known command-injection CVEs in dependencies (partial forward) but does nothing to stop developers from introducing improper neutralization in custom code (none reverse).

Mitigating Controls (ISO/IEC 27001:2022 Annex A) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→ISO cross-walk (authority under review) — links open the control.

A.8.29 Security testing in development and acceptance mostly match
finds

Security testing and code review target insecure use of operating-system command interfaces, catching command-injection flaws introduced during development.

References