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Vulnerabilities

Vulnerability · CVE-2026-4405

IBM Concert 1.0 through 3.0.0 allows web page cache to be stored locally which can be read by another user on the system.

Published Oct 19, 2026 · catalog updated Nov 3, 2026 · IBM Concert 1.0 through

Last checked Nov 4, 2026. A connected source was read within the last 7 days.

Check if you run it

No confirmed exploitation is on record for CVE-2026-4405. EPSS is 0.14%. Act only if a listed version of IBM Concert 1.0 through is installed.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (IBM Concert 1.0 through).
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.

Same product and reporting

Severity
Low3.3
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.14%
Remediation
Version ranges on file
Affected products
cpe ibm/concert

IBM Concert 1.0 through 3.0.0 allows web page cache to be stored locally which can be read by another user on the system.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • cpe ibm/concert>= 1.0.0, <= 3.0.0

How to fix CVE-2026-4405

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2026-4405. EPSS is 0.14%. Act only if a listed version of IBM Concert 1.0 through is installed.

Which versions are affected?

Compare what you have installed with >= 1.0.0, <= 3.0.0. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-525. EPSS 0.14%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Oct 19, 2026 · NIST NVD

    Detected

    IBM Concert 1.0 through 3.0.0 allows web page cache to be stored locally which can be read by another user on the system.

  2. Nov 3, 2026 · NIST NVD

    Updated

    IBM Concert 1.0 through 3.0.0 allows web page cache to be stored locally which can be read by another user on the system.

Sources

  • CVE.orgVulnerability recordCVE-2026-4405

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2026-4405

    30-day exploitation probability 0.14%

    first.org
  • NIST NVDVulnerability recordCVE-2026-4405

    IBM Concert 1.0 through 3.0.0 allows web page cache to be stored locally which can be read by another user on the system.

    nvd.nist.gov

References

Freshness

Last verified in this catalog Nov 4, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.

  • FIRST EPSSNov 4, 2026
  • CVE.orgNov 4, 2026
  • NIST NVDNov 3, 2026