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CVE-2025-0656VulnerabilityPublished Updated

CVE-2025-0656: IBM Concert Software · XSS or 'Cross-site Scripting'

Affects IBM Concert SoftwareSource CVE Database V5

0

Not known to be exploited · CVSS 6.1 Medium.

Data as of 26 Oct 2026, 06:26 UTC

CVSS 3.1 base score
6.1Medium
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.2% chance of exploitation in 30 days – higher than 11% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 1 Sep 2025

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponised: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 2026-10-26.

What to do

Affected software

ProductAffectedFixed in
IBM Concert SoftwareAffected
  • =1.0.0
Fixed in–

AI-suggested

To mitigate this vulnerability, European organizations should prioritize the following actions: 1) Monitor IBM’s official channels for patches or updates addressing CVE-2025-0656 and apply them promptly once available. 2) Implement web application firewalls (WAFs) with rules designed to detect and block common XSS payloads targeting IBM Concert Software endpoints. 3) Conduct user awareness training focused on recognizing phishing attempts and suspicious links, reducing the risk of user interaction with malicious content. 4) Employ Content Security Policy (CSP) headers on the IBM Concert Software web interface to restrict the execution of unauthorized scripts. 5) Review and harden input validation and output encoding practices if custom integrations or extensions are used with the software. 6) Monitor logs for unusual activity patterns indicative of attempted XSS exploitation or session anomalies. 7) Where feasible, restrict access to the IBM Concert Software web interface to trusted networks or VPN users to reduce exposure. These steps go beyond generic advice by focusing on compensating controls and user education tailored to this specific vulnerability and product context.

Description

IBM Concert Software 1.0.0 through 1.1.0 is vulnerable to cross-site scripting. This vulnerability allows an unauthenticated user to embed arbitrary JavaScript code in the Web UI thus altering the intended functionality potentially leading to credentials disclosure within a trusted session.

References

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