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VulnerabilityPublished Updated

CVE-2025-33015: IBM Concert · Unrestricted File Upload

Affects IBM ConcertSource CVE Database V5

0

Not known to be exploited · CVSS 8.8 High.

Data as of 26 Oct 2026, 12:55 UTC

CVSS 3.1 base score
8.8High
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.3% chance of exploitation in 30 days – higher than 23% 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:U/C:H/I:H/A:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 20 Jan 2026

  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 26 Oct 2026.

What to do

Affected software

ProductAffectedFixed in
IBMConcertAffected
  • >=1.0.0 <=2.1.0
Fixed in–

CPE configurations (2)

  • cpe:2.3:a:ibm:concert:1.0.0:*:*:*:*:*:*:*
  • cpe:2.3:a:ibm:concert:2.1.0:*:*:*:*:*:*:*

AI-suggested

To mitigate CVE-2025-33015, organizations should immediately implement strict file upload controls on IBM Concert instances. This includes enforcing file type whitelisting, validating file content beyond extensions (e.g., MIME type verification and file signature checks), and restricting upload permissions to trusted users only. Deploy web application firewalls (WAFs) with rules to detect and block suspicious upload attempts. Monitor logs for unusual file upload activity and scan uploaded files with antivirus and endpoint detection tools. If patches become available from IBM, apply them promptly. In the absence of patches, consider isolating the IBM Concert server within segmented network zones to limit potential lateral movement. Conduct regular security assessments and penetration testing focused on file upload functionalities. Educate users about the risks of uploading untrusted files and enforce strong authentication and session management to reduce the risk of abuse.

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.

References

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