Compromise of intermediate CA keys undermines TLS trust and enables broad MITM attacks affecting many systems; this is a high-impact trust/crypto breach that merits widespread attention.
CVE-2026-108015
eMudhra intermediate CA keys compromised enabling TLS MITM for HCL Notes clients
Is CVE-2026-108015 being exploited?
Not confirmed. CVE-2026-108015 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked.
How severe is CVE-2026-108015?
CVE-2026-108015 is rated Critical with a CVSS score of 9.1. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-108015?
Not known from our data. No patch reference has been recorded for CVE-2026-108015, which is not the same as no patch existing — a fix may have shipped without a tagged reference, or after this record was written. The vendor advisory is the only authority on whether a fix exists, and mitigations may be available regardless.
What does CVE-2026-108015 affect?
CVE-2026-108015 affects HCL Notes Client (outbound network features), Any system trusting affected eMudhra intermediate CAs. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-108015?
Revoke/replace affected CA certs, apply HCL mitigations, block untrusted certs, update Notes when vendor patch is released
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Attackers can forge server TLS certificates to MITM HCL Notes outbound connections, intercept/modify data and steal credentials.
Immediate action required
- affected<= 14.5.1
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.