CVE-2026-119600

tcpflow through 1.6.1 contains an out-of-bounds read vulnerability that allows unauthenticated attackers to read process memory by sending packets with forged IP payload lengths. Attackers can inject crafted IPv4 or IPv6 TCP packets into captured traffic or pcap files to leak adjacent memory into reconstructed flow files or crash tcpflow.

CVSS v3 4.8 MEDIUM

4.8^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.2 / Impact : 2.5

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required NONE

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact NONE

Availability Impact LOW

Scope UNCHANGED

References

Link	Resource
https://github.com/simsong/tcpflow
https://github.com/simsong/tcpflow/blob/tcpflow-1.6.1/src/tcpdemux.cpp#L747
https://github.com/simsong/tcpflow/blob/tcpflow-1.6.1/src/tcpdemux.cpp#L781
https://github.com/simsong/tcpflow/issues/279
https://hackmd.io/@haindpwn/tcpflow-ip-payload-length-oob-read
https://www.vulncheck.com/advisories/tcpflow-through-1.6.1-out-of-bounds-read-via-tcp-demultiplexer-payload-length

Configurations

No configuration.

History

30 Oct 2026, 14:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-10-30 14:16

Updated : 2026-10-30 19:14

NVD link : CVE-2026-119600

Mitre link : CVE-2026-119600

CVE.ORG link : CVE-2026-119600

JSON object : View

Products Affected

No product.

CWE

CWE-130

Improper Handling of Length Parameter Inconsistency

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