CVE-2025-34026

Versa Concerto Actuator Authentication Bypass Information Leak

Severity Score

9.2

*CVSS v4

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

Attend

*SSVC

Descriptions

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.

*Credits: ProjectDiscovery, Harsh Jaiswal, Rahul Maini, Parth Malhotra

CVSS Scores

Attack Vector

Network

Attack Complexity

Low

Attack Requirements

None

Privileges Required

None

User Interaction

None

System

Vulnerable | Subsequent

Confidentiality

High

Integrity

None

Low

Availability

None

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Network

Attack Complexity

Low

Authentication

None

Confidentiality

Partial

Integrity

Partial

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:Attend

Exploitation

Poc

Automatable

Yes

Tech. Impact

Partial

* Organization's Worst-case Scenario

Timeline

2025-04-15 CVE Reserved
2025-05-21 CVE Published
2025-05-22 CVE Updated
2025-05-22 First Exploit
2025-05-23 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date

CWE

CWE-287: Improper Authentication

CAPEC

CAPEC-131: Resource Leak Exposure

References (1)

URL	Tag	Source

URL	Date	SRC
https://projectdiscovery.io/blog/versa-concerto-authentication-bypass-rce	2025-05-22

URL	Date	SRC

URL	Date	SRC

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Versa Search vendor "Versa"		Concerto Search vendor "Versa" for product "Concerto"				>= 12.1.2 <= 12.2.0 Search vendor "Versa" for product "Concerto" and version " >= 12.1.2 <= 12.2.0"		en		Affected