Unauthenticated service interruption via unchecked directory length
Published May 28, 2024 · Updated Feb 13, 2025
Out-of-bounds write in AutomationDirect P3-550E firmware 1.2.10.9 allows remote attackers to interrupt PLC operation. The UDP/9999 FileSystem API handler uses an attacker-controlled directory length as an array index and writes a null byte without a bounds check. No authentication or user interaction is required; the write corrupts heap memory, but public sources do not specify whether interruption takes the form of a crash, hang, or reboot.
Summary
What happened
Out-of-bounds write in AutomationDirect P3-550E firmware 1.2.10.9 allows remote attackers to interrupt PLC operation. The UDP/9999 FileSystem API handler uses an attacker-controlled directory length as an array index and writes a null byte without a bounds check. No authentication or user interaction is required; the write corrupts heap memory, but public sources do not specify whether interruption takes the form of a crash, hang, or reboot.
The record
- CVE
- CVE-2024-24958
- Published
- May 28, 2024
- Updated
- Feb 13, 2025
- Vendor
- AutomationDirect
- Product
- P3-550E Firmware
- Classifications
- CWE-787, T0814
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- May 28, 2024CVE publishedPublication date reported by the CVE source.
- Feb 13, 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=1.2.10.9
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.
Public exploit references
- TALOS-2024-1938 IMM 0x0F14 null-byte overwrite triggerproof of concept · demonstrated
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
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Your stack
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