Is CVE-2025-34026 in the CISA KEV catalog?

Yes. CVE-2025-34026 is on the CISA Known Exploited Vulnerabilities list, added 2026-01-22.

What is the CVSS severity of CVE-2025-34026?

CVE-2025-34026 has a CVSS v3 base score of 7.5 (HIGH).

What is the EPSS score for CVE-2025-34026?

CVE-2025-34026 has an EPSS score of 83.48% (100th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2025-34026?

Upgrade concerto to 12.1.2 or later.

CVE & CISA-KEV Catalog

CVE-2025-34026

HIGHCISA KEVEPSS 100th pctl

7.5

CVSS v3

NVD

Description

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.

CWE-288

How to fix

Remediation Available

concertoNVD

Affected:>= 11.4.0, < 12.1.2Fixed in:12.1.2CVE-2025-34026derived from NVD

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

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityNone

AvailabilityNone

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Exploit Intelligence

83.48%probability of exploitation in 30 days

100thpercentile

Very high risk: more likely to be exploited than 100% of all known CVEs.

Known Exploited Vulnerability (CISA KEV)

Remediation due: 2026-02-12

References

Exploit1

projectdiscovery.io

Vendor Advisory1

security-portal.versa-networks.com

Government Resource1

cisa.gov

Related Vulnerabilities

Other CWE-288 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2023-42793	Critical	9.8	100%	KEV + Ransom	Fix
CVE-2024-1709	Critical	10.0	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	-

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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.