CVE-2026-119600

tcpflow through 1.6.1 Out-of-Bounds Read via TCP Demultiplexer Payload Length

CVSS score

6.3

EPSS probability

—

Risk score

0.6

Published

2 h ago

Overview Public Exploits (0)Newsroom Vulnerability Timeline

Patch status has not yet been verified

Resmî kaynaklarda yeterli kanıt bulunamadı. Bu sonuç “yama yok” anlamına gelmez.

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Vulnerability description

DayBreach AI Explanation

Verified against sources

CVE-2026-119600: tcpflow Out-of-Bounds Read Vulnerability

Sources read

Source agreement

Tam uyum

Evidence confidence

%55

Short explanation

tcpflow through version 1.6.1 contains an out-of-bounds read vulnerability caused by the TCP demultiplexer payload length, allowing unauthenticated attackers to read process memory.

Why does it matter?

Attackers can leak adjacent memory or cause tcpflow to crash by sending manipulated packets.

What should be done?

Follow vendor advisories
Check official sources for updates
Consider risks during pcap analysis workflows

Chain of evidence and sources3 verified claims

tcpflow sürüm 1.6.1 ve öncesi, TCP demultiplexer yük uzunluğu üzerinden sınır dışı okuma zafiyeti barındırmaktadır.

S0 · daybreach-canonical S1 · cvelist

Kimliği doğrulanmamış saldırganlar sahte IP yük uzunlukları içeren paketler göndererek süreç belleğini okuyabilir.

S0 · daybreach-canonical S1 · cvelist

Yama durumu resmî kaynaklarda UNKNOWN olarak değerlendirilmiştir.

S0 · daybreach-canonical

Show the technical text from the sources

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 vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:L/SC:N/SI:N/SA:N

CWE: CWE-130

This explanation was compiled automatically from the source records. Scores, active exploitation, patch and exploit status come straight from the sources.

IMPACT: Affected Products and Software

Affected Products

The following products are affected by CVE-2026-119600 vulnerability. Where our threat engine knows the exact affected versions, they are listed below.

ID	VENDOR	PRODUCT	ACTION
1	simsong	tcpflow	View

Total affected vendors: 1|Products: 1

RED HAT CSAF/VEX: Product Impact Check

Red Hat has not yet published a CSAF/VEX impact record for this CVE. This does not mean “not affected”.

SCORING: CVSS from Multiple Sources

CVSS Scores

The Common Vulnerability Scoring System is a standardised framework for assessing the severity of vulnerabilities in software and systems. We collect and display CVSS scores from several sources for each CVE.

SCORE	VERSION	SEVERITY	VECTOR	SOURCE
6.3	CVSS V40	MEDIUM	CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X	NVD
6.3	CVSS V4_0	MEDIUM	CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:L/SC:N/SI:N/SA:N	CVE CNA
4.8	CVSS V31	MEDIUM	CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:L	NVD
4.8	CVSS V3_1	MEDIUM	CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:L	CVE CNA

Patch and Remediation Guide

Solution & Remediation Advisory

Patch status unknown

İncelenen resmî kaynaklarda yama durumu doğrulanamadı. Bu sonuç “yama yok” anlamına gelmez.

Confirm the affected product and version against the source evidence above.

Restrict access to internet-facing services and apply network segmentation.

Until a patch is confirmed, follow the vendor advisory; do not read an unknown status as “no patch”.

Monitor server logs and network endpoints for signs of anomalous execution.

Public exploit and active exploitation status

Verified exploit intelligence

No verified public PoC, exploit repository or Metasploit module has been found for this CVE yet.

Weakness Classification and Attack Patterns (CWE & CAPEC)

CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorises the common flaws or weaknesses that can lead to vulnerabilities. CVE-2026-119600 is associated with the following CWEs:

CWE-130: Common Weakness Enumeration Entry CWE-130

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2026-119600 weaknesses.

CAPEC-66: SQL Injection CAPEC-126: Path Traversal CAPEC-28: OS Command Injection

Attack Vector and Accessibility

ExposureAğ üzerinden

PermissionsGerekmiyor

UserGerekmiyor

Official Sources and Advisories

https://github.com/simsong/tcpflow/issues/279vendor-advisory https://github.com/simsong/tcpflow/blob/tcpflow-1.6.1/src/tcpdemux.cpp#L781vendor-advisory https://github.com/simsong/tcpflow/blob/tcpflow-1.6.1/src/tcpdemux.cpp#L747vendor-advisory https://hackmd.io/@haindpwn/tcpflow-ip-payload-length-oob-readvendor-advisory https://github.com/simsong/tcpflowvendor-advisory VulnCheck Advisory: tcpflow through 1.6.1 Out-of-Bounds Read via TCP Demultiplexer Payload Lengthvendor-advisory

CVSS Vector Radar Chart

6.3 / 10

Vulnerability Scoring Details

CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:L/SC:N/SI:N/SA:N

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone required

User InteractionNone required

Confidentiality (Gizlilik)Low

Integrity (Bütünlük)None

Availability (Erişilebilirlik)Low

Yama durumu bilinmiyor

İncelenen resmî kaynaklarda yama durumu doğrulanamadı. Bu sonuç “yama yok” anlamına gelmez.

Follow the vendor

simsong

Weakness Type (CWE & CAPEC)

CWE-130

Get this vulnerability through the API

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