High severity · published Dec 26, 2025
CVE-2025-12771
IBM Concert 1.0.0 through 2.1.0 is vulnerable to a stack-based buffer overflow, caused by improper bounds checking
7.8
CVSS
0.2%
EPSS
No
On KEV
Description
IBM Concert 1.0.0 through 2.1.0 is vulnerable to a stack-based buffer overflow, caused by improper bounds checking. A local user could overflow the buffer and execute arbitrary code on the system.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 5% 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 before 2.2.0 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-12771
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-12771
Vendor Advisory
https://www.ibm.com/support/pages/node/7255549
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