Sensitive information disclosure via uncleared heap memory
Published Feb 17, 2026 · Updated Feb 17, 2026
Information disclosure in IBM Concert 1.0.0 through 2.1.0 allows man-in-the-middle attackers to obtain sensitive data. The heap-memory release path fails to clear sensitive contents before reuse; IBM has not identified the affected service or function. Exploitation requires an unauthenticated network adversary in a man-in-the-middle position and affects confidentiality without reported modification or interruption.
Summary
What happened
Information disclosure in IBM Concert 1.0.0 through 2.1.0 allows man-in-the-middle attackers to obtain sensitive data. The heap-memory release path fails to clear sensitive contents before reuse; IBM has not identified the affected service or function. Exploitation requires an unauthenticated network adversary in a man-in-the-middle position and affects confidentiality without reported modification or interruption.
The record
- CVE
- CVE-2025-33101
- Published
- Feb 17, 2026
- Updated
- Feb 17, 2026
- Vendor
- IBM
- Product
- Concert
- Classifications
- CWE-244, T1557
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Feb 17, 2026CVE publishedPublication date reported by the CVE source.
- Feb 17, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=1.0.0 <=2.1.0
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
No public exploit references are available in this record.
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Technologies
Your stack
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Your stack
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