CVE-2026-22314Public exploitNetwork attack vector

Cross-client code execution via administrative script injection

Published May 20, 2026 · Updated May 20, 2026

Code injection in Mesalvo Meona client and server components allows remote authenticated users to execute code on other clients. Administrative script and XML configuration features accept executable content that Meona then runs on its clients without restricting it to safe operations. Affected launcher builds run through 19.06.2020 15:11:49 and server builds through 2025.04 5+323020; exploitation requires authenticated feature access and client user interaction.

CVSS severity9.0
Critical
EPSS probability0.39%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Code injection in Mesalvo Meona client and server components allows remote authenticated users to execute code on other clients. Administrative script and XML configuration features accept executable content that Meona then runs on its clients without restricting it to safe operations. Affected launcher builds run through 19.06.2020 15:11:49 and server builds through 2025.04 5+323020; exploitation requires authenticated feature access and client user interaction.

The record

CVE
CVE-2026-22314
Published
May 20, 2026
Updated
May 20, 2026
Vendor
Mesalvo
Product
Meona Client Launcher Component
Classifications
CWE-94, T1059
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. May 20, 2026CVE publishedPublication date reported by the CVE source.
  2. May 20, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <=19.06.2020 15:11:49

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Mesalvo · Meona Client Launcher Componentversion=0 <=19.06.2020 15:11:49
Mesalvo · Meona Server Componentversion=0 <=2025.04 5+323020

Published CVSS scores

9.0NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-94Improper Control of Generation of Code ('Code Injection')
T1059Command and Scripting Interpreter

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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