CVE-2026-82356: Imprivata EAM Certificate Key Vulnerability

CVE-2026-82356 Overview

CVE-2026-82356 affects Imprivata Enterprise Access Management (EAM) versions 26.2.6 and earlier. The product cannot rotate its RSA key pair after deployment when generating X.509 certificates. Using a single RSA key pair indefinitely for certificate generation contradicts cryptographic best practices and prolongs exposure if the key is ever compromised.

The issue is documented in CERT Vulnerability Advisory #273940. The National Vulnerability Database (NVD) has not assigned a CVSS score, and no public exploit has been observed.

Critical Impact
A static RSA key pair used indefinitely for X.509 certificate generation extends the window for cryptographic compromise and breaks standard key lifecycle controls.

Affected Products

Imprivata Enterprise Access Management (EAM) versions <=26.2.6

Discovery Timeline

2026-09-23 - CVE-2026-82356 published to NVD
2026-09-23 - Last updated in NVD database

Technical Details for CVE-2026-82356

Vulnerability Analysis

Imprivata EAM generates X.509 certificates using an RSA key pair that is fixed at deployment. The product exposes no supported mechanism to rotate that key pair afterward. Every certificate issued during the deployment lifetime therefore chains to the same underlying private key.

This design violates standard key management guidance, including NIST SP 800-57 recommendations on cryptoperiods. When the same key material is reused across years of certificate issuance, compromise of the private key invalidates the trust of all certificates issued from it.

This is a cryptographic key management flaw and maps to the class of weaknesses covered by Key Management Issues and insufficient key rotation.

Root Cause

The root cause is the absence of a key rotation function in the certificate generation subsystem. Operators cannot generate a new RSA key pair post-deployment or migrate existing certificates to a rotated key. Key lifecycle is effectively unbounded.

Attack Vector

No remote exploitation vector has been published. The risk materializes if the long-lived private key is exposed through backup theft, insider access, side-channel analysis, or future cryptographic advances. An attacker in possession of the key could impersonate the EAM service, forge certificates, or decrypt captured traffic protected by that key.

See the CERT Vulnerability Advisory #273940 for additional technical context. No proof-of-concept code has been released.

Detection Methods for CVE-2026-82356

Indicators of Compromise

No public indicators of compromise are associated with CVE-2026-82356 at this time.
Certificates issued by Imprivata EAM that share the same RSA public key across long time spans indicate the unrotated key condition.

Detection Strategies

Inventory all X.509 certificates issued by Imprivata EAM and record their public key fingerprints and validity periods.
Flag certificates whose SubjectPublicKeyInfo matches the same RSA modulus across multiple issuance dates spanning months or years.
Compare EAM-issued certificate key ages against organizational cryptoperiod policy and generate exceptions for keys exceeding policy limits.

Monitoring Recommendations

Monitor access to EAM key storage, backup files, and certificate export interfaces for unusual read activity.
Track TLS handshakes involving EAM-issued certificates and alert on unexpected reuse of static key material in new deployments.
Retain PKI issuance logs and correlate them with administrative activity on the EAM host.

How to Mitigate CVE-2026-82356

Immediate Actions Required

Contact Imprivata support to confirm the current status of a fix and request guidance on manual key rotation for EAM 26.2.6 and earlier.
Restrict filesystem and administrative access to the EAM server so the RSA private key cannot be extracted from disk or backups.
Encrypt EAM backups with keys managed outside the EAM host and enforce strict access controls on backup storage.

Patch Information

No vendor patch reference is listed in the NVD entry for CVE-2026-82356. Consult the CERT Vulnerability Advisory #273940 and Imprivata support channels for remediation status and any updated builds beyond version 26.2.6.

Workarounds

Where feasible, redeploy Imprivata EAM to a fresh instance to force generation of a new RSA key pair, then reissue dependent certificates.
Shorten the validity period of certificates issued by EAM to limit exposure if the underlying key is compromised.
Isolate the EAM host on a segmented management network and require multi-factor authentication for all administrative access.

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# Configuration example not available - refer to Imprivata support and CERT VU#273940 for authoritative remediation steps