CVE WatchJul 23, 2026

CVE-2026-45575

epa4all-client is the Java Client for epa4all / ePA 3.0 in the Telematik Infrastruktur. Prior to 1.2.2, an attacker who can MITM the TLS con

CVSS

7.4

High

EPSS

0.1%

KEV

—

Exploit Today

0-100

Published: May 26, 2026 · Last modified: Jul 23, 2026 · CWE-347

EPSS · 30d

0.1%EPSS · 30 days0.2%

2026-10-052026-11-01

Technical description

epa4all-client is the Java Client for epa4all / ePA 3.0 in the Telematik Infrastruktur. Prior to 1.2.2, an attacker who can MITM the TLS connection between the client and the IDP (within the TI network) can substitute a forged discovery document. The forged document redirects uri_puk_idp_enc and uri_puk_idp_sig to attacker-controlled URLs. The client then encrypts the SMC-B-signed challenge response to the attacker's encryption key and POSTs it to the attacker's auth endpoint. This captures the signed authentication material. This vulnerability is fixed in 1.2.2.

Official references

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