EUVD-2026-62424
GHSA-6hh6-56f7-7gvq
Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Private key is in a publicly downloadable file (AV:N/AC:L/PR:N/UI:N); a forged-trust key yields high confidentiality and integrity impact but no availability impact.
Primary rating from Vendor (ibm).
CVSS VectorVendor: ibm
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Lifecycle Timeline
2DescriptionCVE.org
IBM AIX 7.2, and 7.3 and IBM PowerVM VIOS 4.1 NIM could allow a remote attacker to bypass security restrictions due to the exposure of intermediate certificate authority private keys in a publicly available update file.
AnalysisAI
Sensitive-key exposure in IBM AIX 7.2/7.3 and PowerVM VIOS 4.1 Network Installation Management (NIM) leaks intermediate certificate authority (CA) private keys inside a publicly downloadable update file, letting remote attackers forge trusted certificates and bypass security restrictions. Rated CVSS 9.1, the flaw impacts confidentiality and integrity (C:H/I:H) but not availability, and IBM has released a fix. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | The concrete prerequisite is access to the specific IBM-published NIM update file that contained the intermediate CA private keys - once downloaded, the attacker holds a reusable signing key with no authentication (PR:N) or user interaction (UI:N) needed. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 3.1 vector AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N scores 9.1 and indicates a network-reachable, low-complexity, unauthenticated issue with high confidentiality and integrity impact and no availability impact, which is consistent with a leaked signing key usable for impersonation and man-in-the-middle rather than a crash. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An attacker downloads the publicly available IBM update file, extracts the intermediate CA private key, and uses it to issue a forged certificate that AIX/VIOS NIM systems trust. Positioned on a path to NIM traffic, the attacker then impersonates a legitimate NIM endpoint or decrypts/tampers with management and update exchanges, bypassing the certificate-based security restriction. … |
| Remediation | Patch available per vendor advisory - apply the IBM-provided fix/ifix for AIX 7.2, AIX 7.3, and PowerVM VIOS 4.1 NIM as documented at https://www.ibm.com/support/pages/node/7283858, using the exact fixed levels IBM lists there (specific fix version not present in the supplied data, so do not assume a build number). … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, inventory all IBM AIX 7.2/7.3 and PowerVM VIOS 4.1 systems in your production environment and determine which have accessed Network Installation Management updates; isolate or operationally restrict affected systems if patching cannot be completed immediately. …
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Same weakness CWE-312 – Cleartext Storage of Sensitive Information
View allSame technique Authentication Bypass
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External POC / Exploit Code
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