Critical severity · published Sep 23, 2026
CVE-2026-6928
Multiple Vulnerabilities in IBM Concert Software
9.8
CVSS
0.5%
EPSS
No
On KEV
Description
IBM Concert 1.0.0 through 3.0.0 references or accesses memory after it has been freed. This allows an attacker who can influence program execution or input may exploit this condition to corrupt memory, cause application crashes, or execute arbitrary code.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 40% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
CO
Concert · IBM
1.0.0 through 3.0.0 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-6928
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-6928
Patch
https://www.ibm.com/support/pages/node/7288830
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