Threats / Webmin / CVE-2019-15107
CVE-2019-15107
· EUVD no mirror located
· GCVE no mirror located
Verified 2026-06-22
Webmin vulnerability
Webmin password_change.cgi contains a command injection vulnerability in the old parameter, allowing unauthenticated remote code execution.
Verdict
Today item, not a backlog item.
A command injection flaw in Webmin's password change functionality enables attackers to execute arbitrary system commands with the privileges of the Webmin process, leading to full system compromise and data theft.
CISA KEV Yes · 2022-03-253Ransomware use Flagged3EPSS 0.99766 (verify live)4Exploit Weaponized · public PoC5
01
Is it exploitable?
— the evidence, ranked above the scoreExploit available
Fully weaponized — public exploit code is cataloged for this vulnerability.We link the existence of the exploit; we do not host or redistribute payloads.
Reported exploitation
795 independent public reports of in-the-wild exploitation are cataloged.Distinct reporting sources (vendor, incident response, government); open them for the underlying claims.
Exploited in the wild
Listed in the CISA Known Exploited Vulnerabilities catalog (added 2022-03-25), flagged for known ransomware use.
Probability (EPSS)
EPSS 0.99766 — modeled likelihood of exploitation activity.EPSS is a daily-changing model output — open the source for today's value.
Severity / affected
Affected: Webmin, Webmin. Confirm exact fixed builds in the vendor advisory.
Weakness (CWE)
Mapped to CWE-78 OS Command Injection — weakness family: Injection.CWE assignment from the public NVD record; the weakness class drives how the flaw is exploited.
02
Who’s exploiting it?
— attribution turns risk into urgencyAttribution not established
No confirmed (advisory-backed) threat-actor attribution is established for this record. Absence of a named actor is not absence of compromise — see Coverage & confidence.
03
Why it matters
— the attack path, told twice: adversary, then board1
Front door — unauthenticated access narrative 1
Attacker
I craft a malicious password change request with shell metacharacters in the old parameter to break out of the intended command context.
Business
Attackers gain unauthenticated remote code execution on systems running vulnerable Webmin instances.
2
Keys to the kingdom — privilege/identity takeover narrative 2
Attacker
I execute arbitrary commands on the target system with the privileges of the Webmin daemon process.
Business
Attackers establish persistent access and lateral movement capabilities within the infrastructure.
3
Lateral reach — past segmentation narrative 3
Attacker
I deploy ransomware payloads or data exfiltration tools across compromised systems.
Business
Organizations face operational disruption, data loss, and extortion demands from ransomware campaigns exploiting this vulnerability.
04
What to do
— defensible action- Remediate per the vendor advisory — confirm the fixed build for your version and verify exposure.1
Say it to the boardA vulnerability with this evidence profile is a defensible budget line, not a backlog ticket — fund the change against the proof above.
05