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No exploitation reportedAwaiting NVD analysis

CVE-2026-15266

Multiple Vulnerabilities in IBM Concert Software

No exploitation reported by the sources we read.

  • Published2026-11-08
  • WeaknessCWE-78

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

IBM Concert 1.0 through 3.0.1.1 contains components that allow potentially unsafe command execution, which could be exploited to run arbitrary system commands on the host.

Timeline

dates in UTC
  1. 2026-11-0817:34CVE publishedCNA

Versions per branch

Products declared by the CNA

As ibm, the CNA that assigned this CVE, declared them in the CVE record; versions as written. NVD lists no product for this CVE yet: this is the only product data so far.

  • IBM Concert
    Affected
    • ≥ 1.0, ≤ 3.0.1.1no fix statedsemver

Source: the CNA record (CVE Program), © The MITRE Corporation,CVE Terms of UseCVE recordupdated 2026-11-08

Neither OSV.dev nor the vendor advisories we read list affected versions for CVE-2026-15266 yet.

Full record on NVD

Fix

No fix published by the sources we read yet. NVD record

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Metasploit modules
none listed
Metasploit Framework

Sources

  • CNACVSS 3.19.82026-11-08
  • NVDCVSS 3.19.8read 2026-11-08
  • CNAweakness (CWE)CWE-782026-11-08
  • NVDweakness (CWE)CWE-78read 2026-11-08
  • GitHub Advisoriesadvisory—

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Published
2026-11-08
Last Modified
2026-11-08
NVD status
Awaiting Analysis
GitHub Advisory
GHSA-whqc-5qpc-xmvj

Frequently asked questions

What is CVE-2026-15266?

IBM Concert 1.0 through 3.0.1.1 contains components that allow potentially unsafe command execution, which could be exploited to run arbitrary system commands on the host.

Is CVE-2026-15266 actively exploited?

Active exploitation of CVE-2026-15266 has not been confirmed.

What is the CVSS score for CVE-2026-15266?

CVE-2026-15266 has a CVSS v3 base score of 9.8 (CRITICAL severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

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Same product first, then the same vendor advisory and the same publication week.

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