CVE-2025-34026
HIGHCISA KEVEPSS 100th pctlDescription
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.
How to fix
TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works
Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.
CVSS v3 Vector
Exploitability
Impact
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Exploit Intelligence
Very high risk: more likely to be exploited than 100% of all known CVEs.
Remediation due: 2026-02-12
References
Related Vulnerabilities
Other CWE-288 vulnerabilities, ordered by exploit likelihood. View all
| CVE | Severity | CVSS | EPSS | Exploited | Fix |
|---|---|---|---|---|---|
| CVE-2024-1709 | Critical | 10.0 | 100% | KEV + Ransom | Fix |
| CVE-2023-42793 | Critical | 9.8 | 100% | KEV + Ransom | Fix |
| CVE-2024-27198 | Critical | 9.8 | 100% | KEV + Ransom | Fix |
| CVE-2025-4427 | Medium | 5.3 | 100% | KEV | Fix |
| CVE-2024-55591 | Critical | 9.8 | 98% | KEV + Ransom | Fix |
| CVE-2023-46747 | Critical | 9.8 | 97% | KEV + Ransom | - |
Common questions
How do I fix CVE-2025-34026?
Upgrade concerto to 12.1.2 or later.
Is CVE-2025-34026 being actively exploited?
Yes. CVE-2025-34026 is listed in the CISA Known Exploited Vulnerabilities catalog, which means exploitation has been observed in the wild. US federal agencies were required to remediate it by 2026-02-12. Treat it as a priority whatever its CVSS score says.
How severe is CVE-2025-34026?
CVE-2025-34026 has a CVSS v3 base score of 7.5, rated high. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.
What does CVE-2025-34026 affect?
Published advisories record a fix for concerto (NVD). Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.
Embed a live status badge for CVE-2025-34026
Markdown
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TridentStack Control continuously scans your Windows, macOS, and Linux fleet for known vulnerabilities, prioritizes them by severity and active exploitation, and patches them automatically.
This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-01-23.