Cisco Informational for Emergency Distrust of eMudhra Root and Intermediate Certificate Authorities
Between October 17 and October 20, 2026, a critical security compromise involving Certificate Authorities that are managed by eMudhra was uncovered. A security researcher demonstrated that the private keys for eight eMudhra intermediate certificates were fundamentally broken due to an unprecedented error in their Key Generation Ceremony (KGC) in April 2025. This allows anyone to brute-force acquire these private keys within seconds. For more information, see eMudhra Intermediate CA Compromise and the Cisco Talos blog post Compromised eMudhra intermediate certificates . Important: If a product
Read at Cisco PSIRT Security Advisories
- Vendor
- Cisco
- Product
- Certificate authorities
- Exposure class
- Identity
Why it ranks 26 (Notable)
- Exposed product class: identity
- Widely deployed vendor product (Cisco)
- Vendor security advisory
- Recency: items published within 24 hours gain 15, within 72 hours 6, within 7 days 2.
Links
- Cisco PSIRT Security Advisories (sec.cloudapps.cisco.com)