CVE-2026-6721CWE-78command-injection

CVE-2026-6721

Critical · published September 24, 2026

CVSS v3.1
9.8
EPSS
1%
Percentile
73.1
In the wild
Unconfirmed
What it is

IBM Concert 1.0.0 through 3.0.0 allows an unauthenticated remote attacker can supply specially crafted input that is incorporated into OS commands, resulting in arbitrary command execution on the underlying system. Successful exploitation allows remote code execution with the privileges of the affected application.

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
0.01449 · 73.1th percentile
Weakness
CWE-78 · Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
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 — → 1%
    epss
  • 23 SEP 20:45Z
    Multiple Vulnerabilities in IBM Concert Software
    cvelistv5