CVE-2026-6730

CRITICAL CVSS 3.1: 7.8 EPSS 0.30%
Updated Sep 28, 2026
Linux
Parameter Value
CVSS 7.8 (CRITICAL)
Affected Versions 1.0.0 — 3.0.0
Type CWE-120 (Buffer Copy without Checking Size)
Vendor Linux
Public PoC No

IBM Concert 1.0.0 through 3.0.0 is vulnerable to a buffer overflow, caused by improper bounds checking. A local user could overflow the buffer and execute arbitrary code on the system.

Attack Parameters

Attack Vector
Local
Requires local access
Attack Complexity
Low
Easy to exploit
Privileges Required
Low
Basic privileges needed
User Interaction
None
No user interaction needed

Impact Assessment

Confidentiality
High
Complete data leak
Integrity
High
Complete data modification
Availability
High
Complete denial of service

CVSS Vector v3.1

Vulnerable Products 2

Configuration From (including) Up to (excluding)
Ibm Concert
cpe:2.3:a:ibm:concert:*:*:*:*:*:*:*:*
1.0.0 <= 3.0.0
Linux Linux_Kernel
cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*
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