CVE-2026-25602

Insufficient Verification of Data Authenticity vulnerability in Mesalvo Meona Client Launcher Component, Mesalvo Meona Server Component makes it possible to send messages to any email address. This issue affects Meona Client Launcher Component: through 19.06.2020 15:11:49; Meona Server Component: through 2025.04 5+323020.

Published: 2026-05-20 Last update: 2026-05-20 Assigner: a6d3dc9e-0591-4a13-bce7-0f5b31ff6158 Source: a6d3dc9e-0591-4a13-bce7-0f5b31ff6158
NVD Status：Deferred，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2026-25602 is rated Low Risk (17.7/100): CVSS Medium severity, with low exploitation likelihood (EPSS 0.01%). Low composite risk—no urgent action required; patch on your normal maintenance cycle and revisit priority if CVSS or EPSS increases.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2026-25602

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-05-20 — 0.01% —

Full EPSS history (1 record total)

Common vulnerability scoring system (CVSS) metrics for CVE-2026-25602

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
4.4 3.1 MEDIUM
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N Click to expand
Attack vector (AV:L)
They already need access on the box, or another person has to do something wrong; it’s not a remote drive-by.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:L)
A normal user session is enough; they don’t have to be admin.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:L)
Some sensitive info could get out, but not a total data dump.
Integrity (I:L)
Attackers could change some data, but it’s limited—not everything goes.
Availability (A:N)
Service keeps running; no real outage angle.
 1.8 2.5 a6d3dc9e-0591-4a13-bce7-0f5b31ff6158

Weakness enumeration for CVE-2026-25602

GitHub Security Advisory for CVE-2026-25602

GHSA-r47h-9xx2-mw53 · Severity: medium — Insufficient Verification of Data Authenticity vulnerability in Mesalvo Meona Client Launcher...

Affected software / configurations for CVE-2026-25602

Vendor Product Version Raw CPE
No affected products in dataset.

References for CVE-2026-25602

cvelogic Threat Intelligence