tcpflow is a TCP/IP packet demultiplexer. In versions up to and including 1.61, wifipcap parses 802.11 management frame elements and performs a length check on the wrong field when handling the TIM element. A crafted frame with a large TIM length can cause a 1-byte out-of-bounds write past `tim.bitmap[251]`. The overflow is small and DoS is the likely impact; code execution is potential, but still up in the air. The affected structure is stack-allocated in `handle_beacon()` and related handlers. As of time of publication, no known patches are available.
Metrics
Affected Vendors & Products
| Vendors | Products |
|---|---|
| Simsong |
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References
History
Fri, 30 Jan 2026 09:00:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Simsong
Simsong tcpflow |
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| Vendors & Products |
Simsong
Simsong tcpflow |
Thu, 29 Jan 2026 22:00:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | tcpflow is a TCP/IP packet demultiplexer. In versions up to and including 1.61, wifipcap parses 802.11 management frame elements and performs a length check on the wrong field when handling the TIM element. A crafted frame with a large TIM length can cause a 1-byte out-of-bounds write past `tim.bitmap[251]`. The overflow is small and DoS is the likely impact; code execution is potential, but still up in the air. The affected structure is stack-allocated in `handle_beacon()` and related handlers. As of time of publication, no known patches are available. | |
| Title | tcpflow has TIM Element OOB Write in wifipcap | |
| Weaknesses | CWE-787 | |
| References |
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| Metrics |
cvssV4_0
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MITRE
Status: PUBLISHED
Assigner: GitHub_M
Published: 2026-01-29T21:42:47.013Z
Updated: 2026-01-29T21:42:47.013Z
Reserved: 2026-01-28T14:50:47.889Z
Link: CVE-2026-25061
Vulnrichment
No data.
NVD
Status : Received
Published: 2026-01-29T22:15:55.797
Modified: 2026-01-29T22:15:55.797
Link: CVE-2026-25061
Redhat
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