CVE-2026-113618 (GCVE-0-2026-113618)

Vulnerability from cvelistv5 – Published: 2026-11-06 14:13 – Updated: 2026-11-06 17:45
VLAI
Title
Improper Server Certificate Validation in ZSIRep Client Library
Summary
The ZSIRep client library (ZSIREP.CLIENT.DLL) is vulnerable to improper server certificate validation. It registers a process-wide .NET callback that accepts any certificate for HTTPS connections without verification. This allows a man-in-the-middle attacker to impersonate the ZSIRep server and intercept or modify authentication data and documents. The callback persists after the client is closed, weakening other HTTPS connections in the same application. The issue was fixed in version 2.12.3.1. The library is used in KS-SOMED (fixed in 2026.03.0.01), KS-PPS (fixed in 2026.03.1.0), KS-MEDIS (fixed in 2026.03.0.0), KS-SOLAB (fixed in 2026.3.1.0), and KS-ASW (fixed in 2026.3.0.1).
Severity
5.3 (Medium)
CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-11-06 17:24 UTC
CWE
  • CWE-295 - Improper Certificate Validation
Assigner
CERT-PL CNA
References
Impacted products
Vendor Product Version
KAMSOFT ZSIRep Client Library Affected: 0.0 , < 2.12.3.1 (semver)
    cpe:2.3:a:kamsoft:zsirep_client_library:*:*:*:*:*:*:*:*
Create a notification for this product.
Credits
Kajetan Pawelec
Show details on NVD website
To clipboard 

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