In VOS compromised, an attacker at network endpoints can possibly view communications…
Priority LOW 26CWE-326Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- High
- Impact type
- Information disclosure
- Confidentiality · integrity · availability
- High · None · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-326.
Summary
In VOS compromised, an attacker at network endpoints can possibly view communications between an unsuspecting user and the service using man-in-the-middle attacks. Usage of unapproved SSH encryption protocols or cipher suites also violates the Data Protection TSR (Technical Security Requirements).
Why it matters now
EPSS 0.0031 24th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | Versa VOS | Fixed Versions: 16.1R2S11, 20.2.2, 21.1.1, 21.2.1 | — | No fix listed | CNA |
- Versa VOS Vendor— Affected Fixed Versions: 16.1R2S11, 20.2.2, 21.1.1, 21.2.1 Fixed in — No fix listed CNA
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2018-16499
- 2026-10-03 Alias added: GHSA-88vg-7c8f-h3pr
References
Advisory 1
More Versa Operating System vulnerabilities
- TI-2018-11835 Exposure of resource to wrong sphere in Versa VOS CVSS 3.1HIGH 8.8
- TI-2018-11836 Session fixation in Versa VOS CVSS 3.1HIGH 8.8
- TI-2019-15170 Insufficiently protected credentials in Versa Director, Versa Analytics, Versa VOS CVSS 3.1MEDIUM 5.5
Sources
- CVE-2018-16499 · CVE Program
- CVE-2018-16499 · NVD
- FIRST EPSS
- GHSA-88vg-7c8f-h3pr · GitHub Advisory Database · CC BY 4.0
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