EUVD-2026-42533
GHSA-jmhq-wjwf-9x96
Severity by source
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Network-accessible unauthenticated endpoint with no special conditions; only limited confidentiality impact applies as no private keys, passwords, or session data are exposed.
Primary rating from Vendor (Nozomi).
CVSS VectorVendor: Nozomi
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Lifecycle Timeline
2DescriptionCVE.org
A Missing Authentication vulnerability was discovered in the SSH keys synchronization endpoint. An unauthenticated attacker can send a request to the SSH keys synchronization endpoint and obtain the list of users that have uploaded their public SSH keys, their groups, and the uploaded public SSH keys.
AnalysisAI
Unauthenticated access to the SSH keys synchronization endpoint in Nozomi Networks Guardian and CMC exposes user enumeration data and SSH public keys to any network-reachable attacker. By sending a single unauthenticated request to this endpoint, an attacker can retrieve usernames, group memberships, and uploaded SSH public keys - providing meaningful reconnaissance into the OT security platform's user base. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | The CVSS 4.0 vector (PR:N/AC:L/AT:N) confirms exploitation requires no authentication, no special attack complexity, and no attack prerequisites beyond network reachability to the SSH keys synchronization endpoint on Guardian or CMC. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 4.0 vector (AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N) describes a trivially exploitable, zero-prerequisite network attack with limited confidentiality impact and no integrity or availability consequence - consistent with the 6.9 score. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An attacker with network access to the Guardian or CMC management interface sends a single unauthenticated HTTP request to the SSH keys synchronization endpoint. The server returns a structured response containing usernames, group memberships, and SSH public keys for all users who have uploaded key material. … |
| Remediation | Consult the Nozomi Networks advisory at https://security.nozominetworks.com/NN-2026:10-01 and apply the vendor-released patch - exact fixed version numbers were not included in available intelligence and must be confirmed from the advisory. … Detailed patch versions, workarounds, and compensating controls in full report. |
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External POC / Exploit Code
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