IBM Concert 1.0-2.2 Buffer Clear Bypass (CVE-2025-64646)
CVE-2025-64646 Published on March 25, 2026

Multiple Vulnerabilities in IBM Concert Software
IBM Concert 1.0.0 through 2.2.0 could allow an attacker to access sensitive information in memory due to the buffer not properly clearing resources.

Vendor Advisory NVD

Vulnerability Analysis

CVE-2025-64646 is exploitable with local system access, and does not require authorization privileges or user interaction. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have a high impact on confidentiality, with no impact on integrity and availability.

Attack Vector:
LOCAL
Attack Complexity:
LOW
Privileges Required:
NONE
User Interaction:
NONE
Scope:
UNCHANGED
Confidentiality Impact:
HIGH
Integrity Impact:
NONE
Availability Impact:
NONE

Weakness Type

Compiler Removal of Code to Clear Buffers

Sensitive memory is cleared according to the source code, but compiler optimizations leave the memory untouched when it is not read from again, aka "dead store removal."


Products Associated with CVE-2025-64646

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IBM Concert
 

Affected Versions

IBM Concert:

Exploit Probability

EPSS
0.01%
Percentile
1.37%

EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.