Unauthenticated service interruption via crafted TCP packets
Published Feb 11, 2025 · Updated Feb 12, 2025
Improper resource release in Siemens SIMATIC and SIPLUS S7-1200 CPUs before V4.7 allows remote attackers to interrupt service via TCP port 80. The device mishandles specially crafted packets received by its TCP/80 service; Siemens identifies improper resource shutdown or release but does not disclose the affected routine or resource. No authentication or user interaction is required, and the published impact is limited to device availability.
Summary
What happened
Improper resource release in Siemens SIMATIC and SIPLUS S7-1200 CPUs before V4.7 allows remote attackers to interrupt service via TCP port 80. The device mishandles specially crafted packets received by its TCP/80 service; Siemens identifies improper resource shutdown or release but does not disclose the affected routine or resource. No authentication or user interaction is required, and the published impact is limited to device availability.
The record
- CVE
- CVE-2025-24811
- Published
- Feb 11, 2025
- Updated
- Feb 12, 2025
- Vendor
- Siemens
- Product
- SIMATIC S7-1200 CPU 1215FC DC/DC/Rly
- Classifications
- CWE-404, T1499
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Feb 11, 2025CVE publishedPublication date reported by the CVE source.
- Feb 12, 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=0 <V4.7
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
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Weakness, pattern, technique
Public exploit references
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Technologies
Your stack
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Your stack
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