Unauthenticated code execution via CDA integer underflow
Published Jul 10, 2025 · Updated Aug 4, 2025
Integer underflow in Honeywell Control Data Access allows remote attackers to execute code on affected Experion PKS and OneWireless WDM systems. The CDA communication path subtracts attacker-controlled integer data without adequate bounds validation, allowing the result to underflow. No authentication or user interaction is required, and successful exploitation can alter control data, disclose limited data, or interrupt operation.
Summary
What happened
Integer underflow in Honeywell Control Data Access allows remote attackers to execute code on affected Experion PKS and OneWireless WDM systems. The CDA communication path subtracts attacker-controlled integer data without adequate bounds validation, allowing the result to underflow. No authentication or user interaction is required, and successful exploitation can alter control data, disclose limited data, or interrupt operation.
The record
- CVE
- CVE-2025-2523
- Published
- Jul 10, 2025
- Updated
- Aug 4, 2025
- Vendor
- Honeywell Technologies
- Product
- C200E
- Classifications
- CWE-191, CAPEC-216, T1210
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Jul 10, 2025CVE publishedPublication date reported by the CVE source.
- Aug 4, 2025Record 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=520.1 <=520.2 TCU9
- Affected versionversion=530 <=530 TCU3
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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