HCL Domino Server Certificate Trust channel accessible

Summaryinfo

A vulnerability described as very critical has been identified in HCL Domino Server. Affected by this vulnerability is an unknown functionality of the component Certificate Trust. Such manipulation leads to channel accessible. This vulnerability is referenced as CVE-2026-108014. It is possible to launch the attack remotely. No exploit is available.

Detailsinfo

A vulnerability was found in HCL Domino Server (unknown version) and classified as very critical. Affected by this issue is an unknown code block of the component Certificate Trust. The manipulation with an unknown input leads to a channel accessible vulnerability. Using CWE to declare the problem leads to CWE-300. The product does not adequately verify the identity of actors at both ends of a communication channel, or does not adequately ensure the integrity of the channel, in a way that allows the channel to be accessed or influenced by an actor that is not an endpoint. Impacted is confidentiality, integrity, and availability. CVE summarizes:

Private keys for eight eMudhra intermediate CA certificates have been compromised https://emudhra.we-have-a-problem.com/ , which impacts certificate trust for outbound network request features of HCL Domino Server.  An unauthenticated network attacker could spoof server certificates to execute a man in the middle (MITM) attack, enabling them to intercept and/or modify the content of outbound TLS connections.

The advisory is shared for download at support.hcl-software.com. This vulnerability is handled as CVE-2026-108014 since 10/09/2026. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 10/27/2026). The MITRE ATT&CK project declares the attack technique as T1557.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

Once again VulDB remains the best source for vulnerability data.

Productinfo

Vendor

• HCL

Name

• Domino Server

License

• commercial

CPE 2.3info

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CPE 2.2info

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