CVE-2025-34026: Versa Concerto Improper Authentication Vulnerability

CISA Known Exploited Vulnerabilities

Name

Versa Concerto Improper Authentication Vulnerability

Vendor

Versa

Product

Concerto

Added to the catalog

2026-01-22

Due date for US federal agencies

2026-02-12

Weaknesses

CWE-288

Catalog version

2026.10.30

Versa Concerto SD-WAN orchestration platform contains an improper authentication vulnerability 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.

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.

Ransomware use: CISA does not mark known use of this vulnerability in ransomware campaigns.

Links in CISA's notes

• https://security-portal.versa-networks.com/emailbulletins/6830f94328defa375486ff2e
• https://nvd.nist.gov/vuln/detail/CVE-2025-34026

Read on 2026-11-02T23:39:54.475Z under licence cisa-kev-cc0@b0067899 from https://www.cisa.gov/sites/default/files/feeds/known_exploited_vulnerabilities.json

NVD analysis

Status

Analyzed

Published

2025-05-21T22:15:50.510

Last modified

2026-06-17T09:13:19.833

Weaknesses

CWE-288

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.

References

• https://projectdiscovery.io/blog/versa-concerto-authentication-bypass-rce (Exploit, Mitigation, Third Party Advisory)
• https://projectdiscovery.io/blog/versa-concerto-authentication-bypass-rce (Exploit, Mitigation, Third Party Advisory)
• https://security-portal.versa-networks.com/emailbulletins/6830f94328defa375486ff2e (Vendor Advisory)
• https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-34026 (US Government Resource)

This product uses the NVD API but is not endorsed or certified by the NVD.

Read on 2026-11-02T23:42:22.836Z under licence nvd-api-terms-of-use@ff2a5288 from https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2025-34026

CVE record

Title (CNA)

Versa Concerto Actuator Authentication Bypass Information Leak

Assigner

VulnCheck

State

PUBLISHED

Published

2025-05-21T22:04:58.832Z

Updated

2026-01-23T14:34:06.013Z

Problem types

CWE-288 Authentication Bypass Using an Alternate Path or Channel

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.

References

• https://projectdiscovery.io/blog/versa-concerto-authentication-bypass-rce

Read on 2026-11-03T02:16:16.960Z under licence cve-terms-of-use@81bfa2f3 from https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2025/34xxx/CVE-2025-34026.json

Defensive techniques (MITRE D3FEND)

D3FEND maps these defensive techniques to the weakness (CWE) that NVD lists for this CVE, through the digital artifacts the weakness affects. D3FEND does not say they stop this vulnerability.

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