Full Report
The unpatched vulnerabilities, with a CVSS score of 8.6 to 10.0, can lead to remote code execution via authentication bypass
Analysis Summary
# Vulnerability: Critical Flaws in Versa Networks SD-WAN/SASE Platform (Concerto)
## CVE Details
- CVE ID: CVE-2025-34025, CVE-2025-34026, CVE-2025-34027
- CVSS Score:
- CVE-2025-34025: 8.6 (CVSSv4)
- CVE-2025-34026: 9.2 (CVSSv4)
- CVE-2025-34027: 10.0 (CVSSv4)
- CWE: Not explicitly stated, but relates to Unsafe Defaults/Path Traversal/Authentication Bypass.
## Affected Systems
- Products: Versa Concerto (Orchestration platform for Versa Networks SD-WAN/SASE solutions).
- Versions: Not specified in the provided text, but all versions prior to the patch release are implicitly vulnerable.
- Configurations: Specific configuration details were not detailed beyond the component names (e.g., Traefik reverse proxy).
## Vulnerability Description
Three critical vulnerabilities were found in the Versa Concerto platform:
1. **CVE-2025-34025 (Privilege Escalation/Container Escape):** Caused by the unsafe default mounting of host binary paths, allowing an attacker within a container to modify host paths, leading to privilege escalation and escape from the container environment.
2. **CVE-2025-34026 (Authentication Bypass/Information Leak):** A flaw in the Traefik reverse proxy configuration that allows an attacker to bypass authentication in the Versa Concerto Actuator, potentially leading to an information leak.
3. **CVE-2025-34027 (Authentication Bypass/RCE):** A critical authentication bypass vulnerability in the Traefik reverse proxy configuration which, due to path loading manipulation, allows an attacker to achieve Remote Code Execution (RCE).
## Exploitation
- Status: Not explicitly stated if exploited in the wild, but the finding by researchers and the assignment of high scores suggest potential for active exploitation once details are public.
- Complexity: Implied to be relatively low given the RCE possibility (CVE-2025-34027).
- Attack Vector: Likely network-based, especially for the authentication bypasses leading to RCE.
## Impact
- Confidentiality: High (Information leak possible via CVE-2025-34026; high risk associated with RCE).
- Integrity: Critical (RCE possible via CVE-2025-34027; host path modification via CVE-2025-34025).
- Availability: High (RCE can lead to denial of service or system takeover).
## Remediation
### Patches
- Versa Networks has not yet released patches for any of the reported vulnerabilities (as of May 22, 2025).
### Workarounds
- No specific workarounds were detailed in the provided summary. *Note: Due to the severity (including RCE), immediate patching when available is paramount.*
## Detection
- Indicators of compromise: Not specified regarding IoCs, but look for unusual outbound connections, unexpected file modifications on the host system from within the container context, and authentication failures related to the Versa Concerto Actuator component.
- Detection methods and tools: Standard network monitoring and endpoint detection capabilities should focus on traffic directed at the Versa Concerto components, particularly attempts leveraging Traefik proxy interactions or unauthorized file access within container boundaries.
## References
- Vendor advisories: Not specified as Versa had not released patches at the time of reporting.
- Relevant links - defanged:
- infosecurity-magazine dot com/news/critical-zerodays-versa-networks/
- cve dot org/CVERecord?id=CVE-2025-34025
- cve dot org/CVERecord?id=CVE-2025-34026
- cve dot org/CVERecord?id=CVE-2025-34027