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CVE-2026-45574— epa4all-client: TLS Certificate Validation Disabled in Production

Quick assessment

Affected
oviva-ag epa4all-client
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

epa4all-client是Oviva AG开源的一个文档写入客户端工具。 epa4all-client 1.2.2之前版本存在信任管理问题漏洞，该漏洞源于网络路径上的攻击者可呈现任意TLS证书并拦截所有SOAP流量，可能导致患者标识符、SMC-B卡操作、文档内容和凭据交换泄露。

CVSS 8.1 · High EPSS 0.14% · P3

Affected Version Matrix 2

VendorProduct Version RangeStatus
com.oviva.telematik epa4all-client < 1.2.2 affected
oviva-ag epa4all-client < 1.2.2 affected
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I. Basic Information for CVE-2026-45574

Vulnerability Information
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Vulnerability Title
epa4all-client: TLS Certificate Validation Disabled in Production
Source: CVE Program / CVE List V5
Vulnerability Description
epa4all-client is the Java Client for epa4all / ePA 3.0 in the Telematik Infrastruktur. Prior to 1.2.2, an attacker on the network path between the ePA service and the Konnektor can present any TLS certificate (self-signed, expired, wrong CN) and intercept all SOAP traffic. This includes patient identifiers (KVNR), SMC-B card operations (authentication, signing), document content, and credential exchanges. This vulnerability is fixed in 1.2.2.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
证书验证不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
epa4all-client 信任管理问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
epa4all-client是Oviva AG开源的一个文档写入客户端工具。 epa4all-client 1.2.2之前版本存在信任管理问题漏洞，该漏洞源于网络路径上的攻击者可呈现任意TLS证书并拦截所有SOAP流量，可能导致患者标识符、SMC-B卡操作、文档内容和凭据交换泄露。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
oviva-ag epa4all-client < 1.2.2 -
com.oviva.telematik epa4all-client < 1.2.2 -

II. Public POCs for CVE-2026-45574

# POC Description Source Link Shenlong Link
AI-Generated POC Premium
Qwen3.6-35B-A3B · 8468 chars
Pro+ exclusive includes:
Vulnerability reproduction recording (real sandbox build + trigger, exclusive)
In-depth vulnerability mechanism
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Exploit chain & mitigation
POC zip download
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III. Intelligence Information for CVE-2026-45574

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Patches & Fixes for CVE-2026-45574 (1)

Vendor Advisories for CVE-2026-45574 (1)

Same Patch Batch · oviva-ag · 2026-05-26 · 4 CVEs total

CVE-2026-44900 8.1 HIGH epa4all-client: VAU Signature bypass
CVE-2026-45575 7.4 HIGH epa4all-client: Improper Verification of Cryptographic Signature
CVE-2026-47672 6.5 MEDIUM epa4all-client: Unauthenticated REST API for Patient Record Writes

IV. Related Vulnerabilities

Same product: epa4all-client
Same vendor: oviva-ag
Same weakness: CWE-295

V. Comments for CVE-2026-45574

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