Cyber Resilience

CVE-2026-25602

Medium

Published: 20 May 2026

Published
20 May 2026
Modified
20 May 2026
KEV Added
—
Patch
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CVSS Score v3.1 4.4 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
EPSS Score 0.0009 0.6th percentile
Risk Priority 35 floored blend · peak EPSS

Summary

CVE-2026-25602 is a medium-severity Insufficient Verification of Data Authenticity (CWE-345) vulnerability in Seccore (inferred from references). Its CVSS base score is 4.4 (Medium).

Operationally, exploitation aligns with the MITRE ATT&CK technique Email Spoofing (T1684.002); ranked at the 0.6th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

OWASP Top 10 for Web (2025)

A08:2025 Software or Data Integrity Failures

EU & UK References

Vulnerability details

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…

more

2025.04 5+323020.

CWE(s)
CWE-345

Related Threats

MITRE ATT&CK Enterprise TechniquesAI

T1684.002 Email Spoofing Stealth
Adversaries may fake, or spoof, a sender’s identity by modifying the value of relevant email headers in order to establish contact with victims under false pretenses.
attack.mitre.org →
Why these techniques?

CWE-345 enables arbitrary email transmission, directly mapping to email spoofing abuse.

Confidence: MEDIUM · MITRE ATT&CK Enterprise v19.0

Affected Assets

Seccore
—
inferred from references and description; NVD did not file a CPE for this CVE

Mitigating Controls

Likely Mitigating Controls AI

Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.

PT-8 Computer Matching Requirements
addresses: CWE-345

Directly requires independent verification of matching output before adverse decisions, mitigating insufficient authenticity checks on data from external sources.

SC-17 Public Key Infrastructure Certificates
addresses: CWE-345

Use of approved PKI certificates provides verifiable data authenticity and origin for communications and artifacts.

SC-20 Secure Name/Address Resolution Service (Authoritative Source)
addresses: CWE-345

Mandates provision of authenticity and integrity artifacts that enable verification of name/address resolution data.

SC-21 Secure Name/Address Resolution Service (Recursive or Caching Resolver)
addresses: CWE-345

Requires explicit verification of data authenticity from authoritative sources, preventing acceptance of unauthenticated resolution responses.

SC-33 Transmission Preparation Integrity
addresses: CWE-345

Control requires verification of data authenticity/integrity (e.g., checksums) after aggregation/packing, directly reducing exploitation of insufficient verification before transmission.

SC-45 System Time Synchronization
addresses: CWE-345

Time synchronization supports reliable freshness verification when checking data authenticity across systems or components.

SI-7 Software, Firmware, and Information Integrity
addresses: CWE-345

Mandates verification of data authenticity for software, firmware, and information.

SR-4 Provenance
addresses: CWE-345

Provenance documentation and monitoring directly enables verification of authenticity for components and data throughout their history.

References