CVE-2026-6730CWE-120

CVE-2026-6730

Critical · published September 24, 2026

CVSS v3.1
9.8
EPSS
0%
Percentile
21.9
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
9.8 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00304 · 21.9th percentile
Weakness
CWE-120 · Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
Published
2026-09-24T01:17Z
Affected products (1)
ProductVersionsFixed in
ibm/concert≥ 1.0.0, ≤ 3.0.0—
References (1)
https://www.ibm.com/support/pages/node/7288830 · [email protected]
EPSS history
Timeline
  • 25 SEP 03:27Z
    EPSS moved — → 0%
    epss
  • 23 SEP 20:46Z
    Multiple Vulnerabilities in IBM Concert Software
    cvelistv5