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Vulnerabilities

Vulnerability · CVE-2025-34026

Versa Concerto Improper Authentication Vulnerability

Published May 21, 2025 · catalog updated Jun 17, 2026 · Versa Concerto

Patch now

CVE-2025-34026 is in the CISA known-exploited catalog, due Feb 12, 2026. Confirm Versa Concerto against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Severity
Critical9.2
Known exploitation
CISA KEV and VulnCheck KEV
EPSS
81.78%
Remediation
Remediation guidance
Affected products
cpe versa-networks/concerto · vendor Versa Concerto · vendor Versa Concerto 12.1.2 ≤12.2.0

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.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • cpe versa-networks/concerto12.1.2
  • cpe versa-networks/concerto12.2.0
  • vendor Versa Concertoversion unspecified
  • vendor Versa Concerto 12.1.2 ≤12.2.012.1.2 ≤12.2.0

How to fix CVE-2025-34026

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

CVE-2025-34026 is in the CISA known-exploited catalog, due Feb 12, 2026. Confirm Versa Concerto against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Which versions are affected?

Compare what you have installed with Versa Concerto 12.1.2 ≤12.2.0 12.1.2 ≤12.2.0. Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

What should an analyst verify?

CWE-288. EPSS 81.78%. The CISA KEV listing is the exploitation evidence. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. May 21, 2025 · Catalog

    Detected

    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.

  2. Jan 22, 2026 · CISA KEV

    Known exploited

    Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

  3. Feb 12, 2026 · CISA KEV

    Remediation due

    Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

  4. Jun 17, 2026 · Catalog

    Updated

    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.

Sources

  • CISA KEVConfirmed exploitationCVE-2025-34026

    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.

    cisa.gov
  • CVE.orgVulnerability recordCVE-2025-34026

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2025-34026

    30-day exploitation probability 81.8%

    first.org
  • EUVDVulnerability recordEUVD-2025-16087

    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.

    euvd.enisa.europa.eu
  • NIST NVDVulnerability recordCVE-2025-34026

    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.

    nvd.nist.gov
  • VulnCheck KEVConfirmed exploitationCVE-2025-34026

    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 l

    vulncheck.com

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.