Digital Trust PractitionersAssociation of Digital Trust Practitioners · TrustPractitioners.org
JoinJoin
BREACH WATCH BRIEF Critical 💀 Vulnerability

eMudhra CA Issues TLS Certificates with 3‑8‑Bit Private Keys, Undermining Encryption Guarantees

eMudhra Limited issued eight TLS certificates whose private keys contained only 3‑8 bits of entropy, far below industry standards. This weakens TLS encryption for any service using those certificates and highlights the need for robust cryptographic‑key‑management controls in audit‑ready programs.

ADTP Breach Watch · October 23, 2026 · Schneier on Security
SeverityCritical
Type💀 Vulnerability
ConfidenceHigh
ReportedOct 23, 2026
Technology & SaaS Technology and SaaS providers using eMudhra‑issued TLS certificates Enterprises relying on VPNs or other non‑browser TLS connections Third-Party Dependency
Check if you use it. This incident came through a third party or the supply chain. If the product or supplier is in your estate or your vendors', start with the questions to ask below.

What happened

The Indian certificate authority eMudhra released eight TLS certificates with private keys that had only 3 to 8 bits of entropy, making them trivially guessable and exposing TLS sessions to man‑in‑the‑middle decryption.

Why it matters for trust and compliance

  • The incident shows why continuous evidence of strong key‑generation processes and real‑time certificate‑transparency monitoring are essential for a defensible control‑assurance posture.
  • Demonstrates a gap in cryptographic‑key‑management that must be monitored and evidenced for audit readiness.
  • Highlights the need for continuous monitoring of CA issuances via transparency logs as part of control assurance.

Who is affected

Technology and SaaS providers using eMudhra‑issued TLS certificates Enterprises relying on VPNs or other non‑browser TLS connections

Recommended actions

  1. Revoke and replace all eMudhra certificates with weak keys immediately.
  2. Enforce NIST‑approved key‑size and entropy policies in your PKI workflow.
  3. Deploy automated certificate‑transparency monitoring to flag anomalous issuances.
  4. Map cryptographic‑key‑management controls to your framework of record and collect audit evidence.

Regulations library

Every US state privacy law, on one map

24 states have a comprehensive privacy law in the library, alongside the EU, UK, US federal and global laws: 102 in all, each explained in plain words with its sources. Select a state to see what applies there.

Explore the mapFollow Regulatory Watch
  • In force
  • Coming into force
  • Sector laws
AK ME VT NH WA ID MT ND MN IL WI MI NY RI MA OR NV WY SD IA IN OH PA NJ CT CA UT CO NE MO KY WV VA MD DE AZ NM KS AR TN NC SC DC OK LA MS AL GA HI TX FL

Get the Breach Digest

The incidents that matter for your vendors and your data, analysed for practitioners, in one email.