CVE-2026-6730
CVE-2026-6730 is a critical-severity vulnerability in Ibm Concert with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-120.
Key facts
- Severity: Critical (CVSS 3.x base score 9.8)
- EPSS exploit prediction: 0% (21st percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-120
- Affected product: Ibm Concert
- Published:
- Last modified:
Description
IBM Concert 1.0.0 through 3.0.0 is vulnerable to a buffer overflow, caused by improper bounds checking. A local user could overflow the buffer and execute arbitrary code on the system.
Frequently asked questions
- What is CVE-2026-6730?
- IBM Concert 1.0.0 through 3.0.0 is vulnerable to a buffer overflow, caused by improper bounds checking. A local user could overflow the buffer and execute arbitrary code on the system.
- How severe is CVE-2026-6730?
- CVE-2026-6730 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2026-6730 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (21st percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2026-6730?
- CVE-2026-6730 affects Ibm Concert. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2026-6730?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
- When was CVE-2026-6730 published?
- CVE-2026-6730 was published on 2026-09-23 and last updated on 2026-09-28.
References
Affected products (1)
- cpe:2.3:a:ibm:concert:*:*:*:*:*:*:*:*
More vulnerabilities in Ibm Concert
- CVE-2026-6928 — Critical (CVSS 9.8): IBM Concert 1.0.0 through 3.0.0 references or accesses memory after it has been freed. This allows an attacker who can…
- CVE-2026-6721 — Critical (CVSS 9.8): IBM Concert 1.0.0 through 3.0.0 allows an unauthenticated remote attacker can supply specially crafted input that is…
- CVE-2026-3627 — Critical (CVSS 9.1): IBM Concert 1.0.0 through 2.3.1 is vulnerable to SQL injection. A remote attacker could send specially crafted SQL…
- CVE-2025-33015 — High (CVSS 8.8): IBM Concert 1.0.0 through 2.1.0 is vulnerable to malicious file upload by not validating the content of the file…
- CVE-2026-6935 — High (CVSS 7.8): IBM Concert 1.0.0 through 3.0.0 invokes operating system commands without fully qualifying executable paths or…
- CVE-2026-6794 — High (CVSS 7.8): IBM Concert 1.0.0 through 3.0.0 has a double free vulnerability that exists due to incorrect memory management. A local…
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