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CVE-2019-12840· NVD / CVE Program· CNA mitre

In Webmin through 1.910, any user authorized to the "Package Updates" module can execute arbitrary commands with root privileges via the dat

In Webmin through 1.910, any user authorized to the "Package Updates" module can execute arbitrary commands with root privileges via the data parameter to update.cgi.

HighCVSS 8.8 · v3.0—Weaponized No fix recorded
Published
Jun 15, 2019
Updated
Jun 16, 2026
EPSS
77.8% · 100th percentile
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Report tools

JSON

Action score

58

Plan

Add it to your regular patch cycle.

CVSS
35 / 40 · 8.8 / 10
CISA KEV
0 / 30 · Not listed
EPSS
23 / 30 · 77.8%

Affected systems

VendorProduct
webminwebmin

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • webmin webminup to 1.910 inclusive

Same product

webmin: all records

Other highest-scoring records for the same primary product.

  • CVE-2019-15107An issue was discovered in Webmin <=1.920.KEV
    99Now
  • CVE-2022-36446software/apt-lib.pl in Webmin before 1.997 lacks HTML escaping for a UI command.
    68This week
  • CVE-2022-0824Improper Access Control to Remote Code Execution in webmin/webmin
    64This week
  • CVE-2021-31761Webmin 1.973 is affected by reflected Cross Site Scripting (XSS) to achieve Remote Command Execution through Webmin's running process featur
    48Plan
  • CVE-2024-12828Webmin CGI Command Injection Remote Code Execution Vulnerability
    45Plan
  • CVE-2020-8821An Improper Data Validation Vulnerability exists in Webmin 1.941 and earlier affecting the Command Shell Endpoint.
    45Plan

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

No fix version is recorded for this entry. Check the references for vendor advisories.

Exploit status

Weaponized

A ready exploit tool or active in-the-wild use is known for this vulnerability. This should be your top priority.

Evidence

  • Metasploit module ×1
  • Exploit-DB entry ×1
  • Proof-of-concept repository on GitHub ×7

Noroxi does not host or link to exploit code. Metasploit module names and Nuclei template ids are shown (names, not code); Exploit-DB entries and PoC repositories are given as counts only.

Public exploit evidence
SourceKindDate
Exploit-DB entryremote2019-06-11
Metasploit moduleexploit/linux/http/webmin_packageup_rceWebmin Package Updates Remote Command Executionexploit2019-05-16
Proof-of-concept repository on GitHubstars:42019-11-05
Proof-of-concept repository on GitHubstars:82019-11-09
Proof-of-concept repository on GitHubstars:02020-12-23
Proof-of-concept repository on GitHubstars:02021-03-30
Proof-of-concept repository on GitHubstars:02021-10-05
Proof-of-concept repository on GitHubstars:02024-01-25
Proof-of-concept repository on GitHubstars:02025-06-04

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

  1. Metasploit-31 d
  2. First PoC-5 d
  3. Published
  4. TodaySep 30, 2026+2664 d
EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • A low-privileged account is enough.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
high · data can be read
Integrity
high · data or configuration can be modified
Availability
high · the service can be disrupted
Attack vector
Network
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality impact
High
Integrity impact
High
Availability impact
High

Weakness class (CWE)

CWE-78 · Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

CVSS vector

CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

nvd-primary

Root cause

User input is inserted as text into a shell command. The shell may interpret special characters in the input as part of the command.

The bug in code

The whole CWE-78 class

A representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.

Vulnerable

ts
const host = req.body.host;exec("ping -c 1 " + host, onResult);

Fixed

ts
const host = req.body.host;if (!/^[a-z0-9.-]{1,253}$/i.test(host)) return res.sendStatus(400);execFile("ping", ["-c", "1", host], onResult);

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

ATT&CK techniques

—

Noroxi analysis

No Noroxi analysis for this record yet

We don't hand-write analysis for all 385,000+ vulnerabilities; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.

We use this product, ask for help

Change log

No changes recorded on tracked fields yet. Score, KEV, exploit maturity and fix status changes appear here.

References

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records