Vulnerability details
CVE-2025-34026
Actively exploited
Versa Concerto
Versa Concerto Actuator Authentication Bypass Information Leak
CVSS 4.0
9.2Critical
Remedy
Required action (CISA): Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable. (due: 2026-02-12)
Official 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 scores
| Score | Version | Source | Vector |
|---|---|---|---|
| 9.2Critical | 4.0 | CVEProject cvelistV5 (CNA) (VulnCheck) | 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 |
Affected products
| Vendor | Product | Versions | Source |
|---|---|---|---|
| Versa | Concerto | 12.1.2 ≤ v ≤ 12.2.0 | CVEProject cvelistV5 (CNA) |
References and advisories
3
Kolun on Telegram @kolunsec
Exploited CVEs, key news and a daily digest
Alerts for this product's next CVEsFollow the product to get new vulnerabilities on Telegram.
Details
- Published
- 2025-05-22
- Last updated
- 2026-01-23
- State
- Published
- Assigner (CNA)
- VulnCheck
- Kolun priority
- 89 · Critical
CISA KEV catalog
- Date added
- 2026-01-22
- Due date
- 2026-02-12
- Used in ransomware
- Unknown
Exploit prediction (EPSS)
81.78%
Probability of exploitation in 30 days
99.6%
Percentile (among all CVEs)
SSVC assessment (CISA)
- Automatable
- Yes
- Exploitation
- Active
- Technical impact
- Partial
Weaknesses (CWE)
- CWE-288Authentication Bypass Using an Alternate Path or Channel