Vulnerability · Published Feb 2, 2026 · Assigned by ibm

CVE-2025-36253Multiple Vulnerabilities in IBM Concert Software.

Medium 5.9

In plain English

A medium-severity security flaw 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 0.2% (higher than 13% of all known vulnerabilities).

Severity (CVSS 3.1)5.9Medium

Exploit odds (30 days)0.2%top 86.7% 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 uses weaker than expected cryptographic algorithms that could allow an attacker to decrypt highly sensitive information.

Affected products (as reported)

Vendor	Product	Versions
IBM	Concert	1.0.0 – through 2.1.0

Weakness: CWE-759 · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

References

https://www.ibm.com/support/pages/node/7257565 vendor-advisory, patch