CVE-2026-107242
versa vos: no CVSS score yet. EPSS 0.1% estimated probability of exploitation activity in the next 30 days.
The Node.js web service on VOS (previously Versa FlexVNF) is used for URL-based Zero Touch Provisioning (ZTP) of the VOS appliance and is not required after provisioning is complete. This service generates session identifiers using UUID version 1 (UUIDv1), which is derived from the system’s date and time and its MAC address. As a result, successive identifiers differ only slightly and can be predicted. An attacker who can predict a user’s session ID could hijack that user’s session.
Versa’s security hardening guide for Hubs, Branches, and Controllers recommends disabling the Node.js web service after the initial provisioning of the VOS device. This vulnerability is not exploitable on VOS devices where the Node.js web service has been disabled.
- EPSS
- 0.1% estimated probability of exploitation activity in the next 30 days; 4th percentile. Scored 2026-11-10. A forecast for this CVE across the internet, not for your own systems.
- CWE
- CWE-340 Generation of Predictable Numbers or Identifiers
- OWASP Top 10
- A04:2025 Cryptographic Failures
- Published
- Assigned by
- hackerone (CNA)
- NVD analysis
- Awaiting analysis
- Record from
- the NVD, synced
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Affected
Versions
From the CNA's record in the CVE List.
| Product | Affected |
|---|---|
| Versa VOS | from 21.1.1 through 21.2.3 |
| Versa VOS | from 22.1.2 before July 2, 2026 |
| Versa VOS | from 22.1.3 before July 2, 2026 |
| Versa VOS | from 22.1.4 before July 2, 2026 |
| Versa VOS | from 23.1.2 before Aug 3, 2026 |
Fixed in
| Product | Fixed in |
|---|---|
| Versa VOS | 22.1.2 July-2-2026-Hotfix |
| Versa VOS | 22.1.3 July-2-2026-Hotfix |
| Versa VOS | 22.1.4 July-2-2026-Hotfix |
| Versa VOS | 23.1.2 Aug-3-2026-Hotfix |