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7.8

IBM Concert lets local users run arbitrary code

CVE-2026-6730 · published 18 days ago
Summary

Versions 1.0.0 through 3.0.0 of IBM Concert can be tricked by a local user into running unwanted programs because the software does not properly check the size of certain data. This could let an attacker execute code with the same rights as the user running the software. Install the latest security update or upgrade to a newer version as soon as possible.

What to do

The CVE record does not list a fixed version. Check the vendor's site or the advisory links below - a fix may already be released.

Affected software
VendorProductAffected versions
ibm concert <= 3.0.0
>= 1.0.0, <= 3.0.0
Original advisory text
Multiple Vulnerabilities in IBM Concert Software
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.
References
Fix within
Internet-facing 3 days
Internal 60 days
  • Not known to be exploited
  • Can be exploited automatically
  • Gives an attacker full control
Severity
7.8 High
Exploitation
<1% chance of attack within 30 days
Type
CWE-120Classic Buffer Overflow
Timeline
Published23 Sep 2026
Updated12 Oct 2026
First seen23 Sep 2026
Sources
CVE-2026-6730 · NVD
CVE-2026-6730 · MITRE
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