Critical 9.2Known exploited (CISA KEV)Published May 21, 2025

CVE-2025-34026Versa Concerto Actuator Authentication Bypass Information Leak

Updated under an hour ago (2026-10-19 05:50 UTC)

Does this affect you?

It affects Versa Concerto and 1 other product. Add what you run to find out whether that includes you.

CISA lists it as known exploited since Jan 22, 2026; federal agencies had to remediate by Feb 12, 2026. Treat that date as your deadline.

Do this next

Start free and add your stack

Free account, 1 product

Every CVE for Versa Concerto

Exploited in the last 30 days

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: 9.2 CRITICAL (v4.0, CNA)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
Weakness (CWE): CWE-288
Known exploited: Added to CISA KEV Jan 22, 2026; federal remediation due Feb 12, 2026Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
EPSS (exploitation in the next 30 days): 81.94% (percentile 100)
Assigned by: VulnCheck
NVD analysis: Analyzed
Record last updated: Jan 23, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Versa Concerto versa:concerto (from the name)	from 12.1.2 through 12.2.0	CNA record
versa-networks concerto versa-networks:concerto	from 11.4.0 before 12.1.2; 12.1.2; 12.2.0	NVD

References

https://projectdiscovery.io/blog/versa-concerto-authentication-bypass-rceexploit, mitigation, third-party-advisory
https://security-portal.versa-networks.com/emailbulletins/6830f94328defa375486ff2evendor-advisory
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-34026us-government-resource

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.