CVE-2019-15642Webmin Code Injection
rpc.cgi in Webmin through 1.920 allows authenticated Remote Code Execution via a crafted object name because unserialise_variable makes an eval call.
Published Aug 26, 2019 · Updated Oct 20, 2026
Key Facts
Patch immediately- CVE-2019-15642 is a high-severity vulnerability (CVSS 8.8 v3.1) affecting Webmin.
- It is exploited in the wild, listed in CIRCL KEV, Industry KEV feed since Jan 16, 2024. No public exploit code is known.
- EPSS estimates a 35% probability of exploitation in the next 30 days.
- Fixed versions are available, including Webmin <=1.920, Webmin 1.920.
- Brandefense priority: patch immediately, because it is listed as exploited in the wild.
Scores
CVSS v3.1
8.8
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS (30-day exploit likelihood)
35%
Higher than 98.4% of all scored CVEs
Exploit maturity
Exploited (KEV)
ATLAS score
49/100
Publication score, see How it works
Exploitation Verdict
KEV listed
Jan 16, 2024
1604 days after publication
Federal due date
None
No federal due date
Ransomware use
Not reported
Attributed actors
None named
Exploit & Defence Guidance
Exploit maturity
Exploited (KEV)
Public exploit code
0
Proof-of-concept links
In-the-wild evidence
10
Reports of active use
Advisories And Exploit References
- advisoryhttps://doxfer.webmin.com/Webmin/Webmin_Servers_Index
- patchhttps://github.com/webmin/webmin/blob/ab5e00e41ea1ecc1e24b8f8693f3495a0abb1aed/rpc.cgi#L26-L37
- patchhttps://github.com/webmin/webmin/commit/df8a43fb4bdc9c858874f72773bcba597ae9432c
- patchhttps://www.calypt.com/blog/index.php/authenticated-rce-on-webmin/
Description
rpc.cgi in Webmin through 1.920 allows authenticated Remote Code Execution via a crafted object name because unserialise_variable makes an eval call. NOTE: the Webmin_Servers_Index documentation states "RPC can be used to run any command or modify any file on a server, which is why access to it must not be granted to un-trusted Webmin users."
Known-Exploited Catalog Listings
| Catalog | Added | Remediation due | Ransomware use |
|---|---|---|---|
| CIRCL KEV | Jan 16, 2024 | n/a | Not reported |
| Industry KEV feed | Jan 16, 2024 | n/a | Not reported |
Affected Products
1 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| WebminWebmin | See advisory | 1.920 |
Patched Releases
Webmin
<=1.920
Timeline
Publicly disclosed
Aug 26, 2019
Added to CIRCL KEV
Jan 16, 2024
Added to Industry KEV feed
Jan 16, 2024
Last updated
Oct 20, 2026
Weakness Type
- CWE-94 Improper Control of Generation of Code ('Code Injection')
References
- advisorydoxfer.webmin.com · Webmin_Servers_Index
- patchgithub.com · rpc.cgi
- patchgithub.com · df8a43f
- patchcalypt.com · authenticated-rce-on-webmin
- exploitVulnCheck exploitation report
FAQ
Common Questions.
rpc.cgi in Webmin through 1.920 allows authenticated Remote Code Execution via a crafted object name because unserialise_variable makes an eval call.
Affected: Webmin. The full list is in the CVE brief.
It is exploited in the wild, listed in CIRCL KEV, Industry KEV feed since Jan 16, 2024.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
No public exploit code is known.
Fixed versions are available, including Webmin <=1.920, Webmin 1.920.
Brandefense priority: patch immediately, because it is listed as exploited in the wild.
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