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CVE-2026-114406

ca-certificates: Distrust eMudhra intermediate CA certificates due to security concerns

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Severity

Critical

Red Hat Product Security

6.8

CVSS 3.1

Review impact separately from score.

Published · October 20, 2026

Updated · November 4, 2026

Description

The system certificate authority (CA) store in Red Hat products, distributed via ca-certificates RPM packages, included multiple root CA certificates of authorities, which signed intermediate CA certificates with weak private keys issued by the eMudhra certificate authority. A man-in-the-middle attacker could use this flaw to issue certificates for arbitrary host names signed by the weak intermediate CA certificates, which would be considered trusted by a TLS/SSL client using system CA store and cause such clients to connect to malicious sites.

Due to inability to only distrust specific intermediate certificates in all clients using the system CA store, root CA certificates of authorities that signed weak intermediate CA certificates are being removed.

Statement

This CVE has been assigned to track trust store updates to distrust compromised certificates, but is not a vulnerability. For details, see RHSB-2026-012.

CVSS score applicability

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation

See the security bulletin for a detailed mitigation procedure.

CVSS / CWE

CVSS 3.1 · 6.8
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N

CWE-295 · Improper Certificate Validation