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9.1
CVE-2026-108015: HCL Notes Client can be tricked by fake certificates
CVE-2026-108015 · published today
Summary
The HCL Notes Client relies on several eMudhra certificates whose private keys were exposed. Because of this, an attacker on the network could pretend to be a legitimate website and read or change any data the client sends over secure connections. Update the client with the latest security patch or replace the compromised certificates as soon as possible.
What to do
The CVE record does not list a fixed version. Check the vendor's site or the advisory links below - a fix may already be released.
Affected software
| Vendor | Product | Affected versions |
|---|---|---|
| hclsoftware | notes client |
<1=2.0.2 FP8, <=14.0 FP5, 14.5, ,<=14.5.1 FP1 <1=2.0.2 FP8, <=14.0 FP5, 14.5, <=14.5.1 FP1 |
Original advisory text
eMudhra Compromised Certificate vulnerability impacts HCL Notes Client
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 Notes Client. 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.
Internet-facing
14 days
Internal
At next upgrade
- Not known to be exploited
- Needs hands-on effort to exploit (estimated)
- Gives an attacker full control (estimated)
Type
CWE-327Use of a Broken Cryptographic Algorithm
Timeline
Published27 Oct 2026
Updated27 Oct 2026
First seen27 Oct 2026
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