CVE-2026-22063 in ONTAP
Summary
by MITRE • 10/28/2026
The private keys of eight eMudhra intermediate CA certificates have been compromised. eMudhra revoked the eight affected intermediate certificates on October 18, 2026. While this is not a software vulnerability, CVE-2026-22063 has been assigned to track relevant changes in impacted NetApp products.
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Analysis
by VulDB Data Team • 10/28/2026
The compromise of private keys associated with eight eMudhra intermediate Certificate Authority certificates represents a significant breach of trust within the Public Key Infrastructure ecosystem. Unlike traditional software vulnerabilities that exploit flaws in code logic or memory management, this incident stems from key material exposure, which undermines the fundamental cryptographic guarantees provided by digital certificates. The affected intermediates are critical components in the chain of trust used to validate SSL/TLS connections for various services and applications. When private keys are compromised, an attacker gains the ability to impersonate any domain secured by these specific intermediate CAs, effectively allowing them to perform man-in-the-middle attacks or issue fraudulent certificates that appear valid to clients and browsers.
NetApp has assigned CVE-2026-22063 to track the necessary remediation steps within its product suite in response to this external CA compromise. It is important to clarify that this identifier does not denote a defect in NetApp software architecture or implementation but rather serves as a tracking mechanism for required configuration updates and certificate replacements. The vulnerability context here is operational security rather than code-level exploitation. Affected NetApp products likely rely on these eMudhra certificates for secure management interfaces, replication traffic encryption, or client authentication mechanisms. Consequently, the presence of compromised keys in the trust chain creates a risk where attackers could potentially intercept sensitive data or gain unauthorized administrative access if they can generate valid certificates signed by the compromised intermediates.
The operational impact of this compromise is severe because it affects all systems and clients that implicitly trust eMudhra intermediate CAs without explicit pinning or additional verification layers. Attackers who possess the private keys can create rogue certificates for any domain, including internal NetApp management interfaces such as ONTAP System Manager or Active IQ Unified Manager. This enables sophisticated phishing campaigns where attackers present fake login pages that browsers will not flag as insecure due to valid cryptographic signatures. Furthermore, in environments utilizing mutual TLS authentication, compromised CA keys could allow unauthorized devices to authenticate as legitimate nodes within a storage cluster, potentially leading to data exfiltration or manipulation of stored information.
Mitigation strategies primarily involve immediate revocation and replacement of certificates issued by the affected eMudhra intermediates. NetApp has already revoked the eight impacted intermediate certificates on October 18, 2026, which should cause most modern clients to reject new certificates signed with those keys unless they are cached or trusted explicitly. Administrators must audit their environments for any locally installed copies of these compromised CA certificates and remove them from trust stores where possible. For NetApp products specifically, administrators should update the software configuration to use alternative root CAs that have not been compromised. This may involve importing new intermediate certificates signed by a different, uncompromised CA into the product's certificate management system.
From an industry standards perspective, this incident aligns with CWE-326 Inadequate Encryption Strength and CWE-798 Use of Hard-coded Credentials if one considers static trust anchors as credentials that must be rotated upon compromise. The attack vector relates to ATT&CK technique T1557 Adversary-in-the-Middle, where the compromised keys facilitate interception of communications by impersonating trusted endpoints. Organizations should also consider implementing Certificate Transparency monitoring and public key pinning for critical internal services to reduce reliance on broad CA trust models. Regular rotation of certificates and strict control over private key storage using hardware security modules are essential practices to mitigate future risks associated with CA compromises. Continuous monitoring for unauthorized certificate issuance linked to the compromised eMudhra intermediates is also recommended to detect any potential exploitation attempts early in their lifecycle.