CVE-2025-34026
CRITICAL CISA KEV EPSS 99.6%
Published May 21, 20251y ago · Modified Jun 17, 20262w ago
9.2 CVSS 4.0
Published May 21, 2025 1y ago
Last Modified Jun 17, 2026 2w ago
KEV Listed Jan 22, 2026 5mo ago
KEV Due Feb 12, 2026 142d overdue
Description
The Versa Concerto SD-WAN orchestration platform is vulnerable to an authentication bypass in the Traefik reverse proxy configuration, allowing at attacker to access administrative endpoints. The internal Actuator endpoint can be leveraged for access to heap dumps and trace logs.This issue is known to affect Concerto from 12.1.2 through 12.2.0. Additional versions may be vulnerable.
CVSS Details
Base Score
Exploitability
Impact
Vector string
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:H/SI:L/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 Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope X
Threat Intelligence
CISA Known Exploited Overdue 142d
- Added
- Jan 22, 2026
- Due
- Feb 12, 2026
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
EPSS Exploit Probability
99.6% percentile
Exploit & Patch Status
Actively Exploited (KEV)
No Patch Available
Weaknesses 1
CWE-288
Affected Products 3
| Vendor | Product | Version | Range |
|---|---|---|---|
| versa-networks | concerto | * | ≥11.4.0 – <12.1.2 |
| versa-networks | concerto | 12.1.2 | any |
| versa-networks | concerto | 12.2.0 | any |
References 3
- projectdiscovery.io https://projectdiscovery.io/blog/versa-concerto-authentication-bypass-rce
- security-portal.versa-networks.com https://security-portal.versa-networks.com/emailbulletins/6830f94328defa375486ff2e
- cisa.gov https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-34026
Remediation
No remediation data recorded yet
Check vendor advisories and the NVD entry for patch availability.