CVE-2026-18257
Improper validity period check for root issuer certificate in CycloneCrypto cryptographic wrapper of S2OPC allows a certificate issued by th
CVSS
5.6
Medio
EPSS
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KEV
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Exploit Today
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0-100
Publicado: 29 jul 2026 · Última mod.: 29 jul 2026 · CWE-295
Sin historial EPSS suficiente todavía.
Improper validity period check for root issuer certificate in CycloneCrypto cryptographic wrapper of S2OPC allows a certificate issued by this root issuer to be considered trusted
CVECVSSEPSSKEVRExplotTítuloVis.
CVE-2026-84977.4 ALT—
———Improper certificate validation in the Devolutions Server connection handling in Devolutions Password Manager 2026.2.1.0 and earlier on Android, iOS, and macOS allows an adjacent-network attacker to intercept and modify sensitive information via a forged TLS certificate.9hCVE-2026-5816210.0 CRÍ—
——0The Apache Traffic Server certifier plugin generates certificates based on attacker-controlled client SNI.
This issue affects Apache Traffic Server: from 8.0.0 through 8.1.9, from 9.0.0 through 9.2.14, from 10.0.0 through 10.1.3.
Users are recommended to upgrade to version 9.2.15 or 10.1.4, which fix the issue.14hCVE-2026-653254.8 MED—
——0Apache Traffic Server reuses multiplexed HTTP/2 origin connections without verifying the server certificate covers the new request hostname.
This issue affects Apache Traffic Server: from 9.0.0 through 9.2.14, from 10.0.0 through 10.1.3.
Users are recommended to upgrade to version 9.2.15 or 10.1.4, which fix the issue.15hCVE-2026-161075.9 MED—
——0IBM TS4500 CLI tool Versions: 0.1.31 through 1.12.0.0 does not validate or improperly validates TLS certificate validation, which could allow an attacker to obtain sensitive information using man in the middle techniques.13hCVE-2026-543428.1 ALT2.6%
——1In epa4all, prior to version 2026-05-20, an attacker on the network path between epa4all and any backend (ePA Aktensystem, Konnektor, IDP, TSS) can present a self-signed TLS certificate and intercept the connection. For non-VAU connections (Konnektor, IDP), this allows direct read and modification of the inner traffic, including smartcard operations and OIDC authentication exchanges. For the ePA backend, the disabled TLS verification is the transport-level enabler for the VAU MITM described in GHSA-vvh7-x6c7-46gh. This issue has been patched in version 2026-05-20.2dCVE-2026-480219.1 CRÍ2.5%
——1In epa4all, prior to version 2026-05-20, an attacker who can intercept the TLS connection between epa4all and the ePA backend can complete the VAU handshake with attacker-controlled keys and obtain the session encryption keys. All inner HTTP traffic (patient consent decisions, medication data, document operations, authorization tokens, and entitlement queries) becomes readable and modifiable. The attacker can also inject arbitrary requests through the hijacked channel. This issue has been patched in version 2026-05-20.5d