CVE-2026-6730: CWE-120 Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') in IBM Concert
IBM Concert versions 1.0.0 through 3.0.0 contain a classic buffer overflow vulnerability due to improper bounds checking. This flaw allows a local user to overflow a buffer and potentially execute arbitrary code on the affected system. The vulnerability has a critical severity rating with a CVSS score of 9.8, indicating high impact on confidentiality, integrity, and availability.
AI Analysis
Technical Summary
CVE-2026-6730 is a buffer overflow vulnerability in IBM Concert versions 1.0.0 through 3.0.0 caused by insufficient bounds checking during buffer copy operations. A local attacker can exploit this flaw to overwrite memory and execute arbitrary code, leading to full system compromise. The vulnerability is classified under CWE-120 and has a CVSS 3.1 base score of 9.8, reflecting its critical nature.
Potential Impact
Successful exploitation allows a local user to execute arbitrary code with the privileges of the vulnerable application, potentially leading to full system compromise including confidentiality, integrity, and availability impacts.
Mitigation Recommendations
No patch or official fix information is currently provided. Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, restrict local access to trusted users only as a precaution.
CVE-2026-6730: CWE-120 Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') in IBM Concert
Description
IBM Concert versions 1.0.0 through 3.0.0 contain a classic buffer overflow vulnerability due to improper bounds checking. This flaw allows a local user to overflow a buffer and potentially execute arbitrary code on the affected system. The vulnerability has a critical severity rating with a CVSS score of 9.8, indicating high impact on confidentiality, integrity, and availability.
CVSS v3.1
Score 9.8critical
Affected software
IBM
Concert
cpe:2.3:a:ibm:concert:1.0.0:*:*:*:*:*:*:*cpe:2.3:a:ibm:concert:3.0.0:*:*:*:*:*:*:*Run on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-6730 is a buffer overflow vulnerability in IBM Concert versions 1.0.0 through 3.0.0 caused by insufficient bounds checking during buffer copy operations. A local attacker can exploit this flaw to overwrite memory and execute arbitrary code, leading to full system compromise. The vulnerability is classified under CWE-120 and has a CVSS 3.1 base score of 9.8, reflecting its critical nature.
Potential Impact
Successful exploitation allows a local user to execute arbitrary code with the privileges of the vulnerable application, potentially leading to full system compromise including confidentiality, integrity, and availability impacts.
Mitigation Recommendations
No patch or official fix information is currently provided. Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, restrict local access to trusted users only as a precaution.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- ibm
- Date Reserved
- 2026-04-20T21:52:58.079Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6ab4837af7a7c54106b23ca7
Added to database: 09/24/2026, 01:57:14 UTC
Last enriched: 09/24/2026, 01:59:04 UTC
Last updated: 09/24/2026, 03:48:36 UTC
Views: 5
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