Vulnerability · Published Jan 20, 2026 · Assigned by ibm

CVE-2025-33015Multiple Vulnerabilities in IBM Concert Software

High 8.8

In plain English

A high-severity unrestricted file upload in Concert from IBM. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 24% of all known vulnerabilities).

Severity (CVSS 3.1)8.8High

Exploit odds (30 days)0.3%top 76.0% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

IBM Concert 1.0.0 through 2.1.0 is vulnerable to malicious file upload by not validating the content of the file uploaded to the web interface.

Affected products (as reported)

Vendor	Product	Versions
IBM	Concert	1.0.0 – through 2.1.0

Weakness: CWE-434 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

References

https://www.ibm.com/support/pages/node/7257006 vendor-advisory, patch