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CVE-2025-34026
CVE
Critical KEVConfirmedExploit available

The Versa Concerto SD-WAN orchestration platform is vulnerable to an authentication bypass in the Traefik reverse proxy configuration, allo…

CVSS
9.2
Critical
EPSS
0.83
p99
Published
2025-01-01
Updated
2026-01-22
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.

Tags · CWE
KEVPre-authAuth bypass
CWE-288
CAPEC-127
CAPEC-665
Affected products
Concerto 11.4.0–12.1.2Concerto
CVSS vector
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Timeline
2025-01-01
Published
2026-01-22
Added to KEV
2026-01-22
Updated
CVSS 3.1 breakdown
Attack Vector
AV: N
Network (N)
Attack Complexity
AC: L
Low (L)
Attack Requirements
AT: N
None
Privileges Required
PR: N
None (N)
User Interaction
UI: N
None (N)
Vulnerable System Confidentiality
VC: H
High (H)
Vulnerable System Integrity
VI: N
None (N)
Vulnerable System Availability
VA: N
None (N)
Subsequent System Confidentiality
SC: H
High (H)
Subsequent System Integrity
SI: L
Low (L)
Subsequent System Availability
SA: N
None (N)
Exploit Code Maturity
E: X
Not Defined
Confidentiality Requirement
CR: X
Not Defined
Integrity Requirement
IR: X
Not Defined
Availability Requirement
AR: X
Not Defined
Modified Attack Vector
MAV: X
Not Defined
Modified Attack Complexity
MAC: X
Not Defined
Modified Attack Requirements
MAT: X
Not Defined
Modified Privileges Required
MPR: X
Not Defined
Modified User Interaction
MUI: X
Not Defined
Modified Vulnerable System Confidentiality
MVC: X
Not Defined
Modified Vulnerable System Integrity
MVI: X
Not Defined
Modified Vulnerable System Availability
MVA: X
Not Defined
Modified Subsequent System Confidentiality
MSC: X
Not Defined
Modified Subsequent System Integrity
MSI: X
Not Defined
Modified Subsequent System Availability
MSA: X
Not Defined
s
S: X
X
au
AU: X
X
r
R: X
X
v
V: X
X
re
RE: X
X
u
U: X
X
Exploit indicators
EPSS
0.834 · p99
Known exploited (KEV)
Yes
MITRE ATT&CK
Inferred via CAPEC
└ via CAPEC-127 · CWE-288
└ via CAPEC-665 · CWE-288
└ via CAPEC-665 · CWE-288
└ via CAPEC-665 · CWE-288
Known exploits — Сканер-ВС
CVE-2025-34026
cisa · https://www.cisa.gov/known-exploited-vulnerabilities-catalog
Enterprise
Affected products
ProductVendorStatus
concerto*Exploited
Source databases
CVE
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