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CVE-2026-0857

MEDIUM
4.4
CVSS Score
Published: May 20, 2026 at 10:50 AM UTC
Updated: September 25, 2026 at 03:37 PM UTC
2 products affected across 1 vendorMEONA ClientMEONA Server

Using Meona Client Launcher Component by Mesalvo?

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Severity
MEDIUM4.4
Exploit prediction
EPSS 0.1%
SSVC
No known exploit

Description

Cleartext Storage of Sensitive Information in Memory vulnerability in Mesalvo Meona Client Launcher Component, Mesalvo Meona Server Component. This issue affects Meona Client Launcher Component: through 19.06.2020 15:11:49; Meona Server Component: through 2025.04 5+323020.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

MEONA Client· Mesalvo
60%
2025.04 ≤ v < 2025.04.242026.03 ≤ v < 2026.03.022024.102025.042026.03
Affected range stops below 2025.04.24, so it looks safe — our inference, not a vendor statement
Affected range stops below 2026.03.02, so it looks safe — our inference, not a vendor statement
MEONA Server· Mesalvo
60%
2025.04 ≤ v < 2025.04.242026.03 ≤ v < 2026.03.022024.102025.042026.03
Affected range stops below 2025.04.24, so it looks safe — our inference, not a vendor statement
Affected range stops below 2026.03.02, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (2)

Source: cverecord
https://seccore.at/blog/cves-meona/
Vendor Advisory
Source: cverecord
https://mesalvo.com/en/vdp/advisories/msa-2026-002.pdf

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

4.4MEDIUMENISA
Attack Vector
LOCAL
Complexity
LOW
Privileges
HIGH
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
NONE
Availability
NONE
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-316CWE-916

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