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No exploitation reportedAwaiting NVD analysis

CVE-2026-119600

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

No exploitation reported by the sources we read.

  • Published2026-10-30
  • WeaknessCWE-130

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

tcpflow before 1.7.0 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.

Timeline

dates in UTC
  1. 2026-10-3013:18CVE publishedCNA

Versions per branch

Products declared by the CNA1 product

As VulnCheck, the CNA that assigned this CVE, declared them in the CVE record; versions as written.

Source: the CNA record (CVE Program), © The MITRE Corporation,CVE Terms of UseCVE recordupdated 2026-11-09

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

  • tcpflowUbuntu:Pro:14.04:LTSall versions · no fixed version listed
  • tcpflowUbuntu:26.10all versions · no fixed version listed
  • tcpflowUbuntu:26.04:LTSall versions · no fixed version listed
  • tcpflowUbuntu:24.04:LTSall versions · no fixed version listed
  • tcpflowUbuntu:22.04:LTSall versions · no fixed version listed
  • tcpflowUbuntu:20.04:LTSall versions · no fixed version listed
  • tcpflowUbuntu:18.04:LTSall versions · no fixed version listed
  • tcpflowUbuntu:16.04:LTSall versions · no fixed version listed

3 more package ranges on OSV.dev

Vendor advisories

  • CVE-2026-119600 Red Hat Product Security

    tcpflow: tcpflow: Information disclosure via forged IP payload length

Full record on NVD

Fix

No fix published by the sources we read yet. NVD record

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof of concept
Metasploit modules
none listed
Metasploit Framework

Sources

  • CISA-ADPSSVC decisionnone2026-11-04
  • CNACVSS 4.06.32026-11-09
  • CNACVSS 3.14.82026-11-09
  • NVDCVSS 3.14.8read 2026-11-09
  • CNAweakness (CWE)CWE-1302026-11-09
  • NVDweakness (CWE)CWE-130read 2026-11-09
  • FIRST EPSSEPSS score0.4 %2026-11-09
  • OSVaffected packages—
  • GitHub Advisoriesadvisory—

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:L
CVSS 4.0 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/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
Published
2026-10-30
Last Modified
2026-11-09
NVD status
Awaiting Analysis
GitHub Advisory
GHSA-rjcg-fcj6-3hq4

Frequently asked questions

What is CVE-2026-119600?

tcpflow before 1.7.0 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.

Is CVE-2026-119600 actively exploited?

Active exploitation of CVE-2026-119600 has not been confirmed. Its EPSS score was 0.4% on 2026-11-09, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2026-119600?

CVE-2026-119600 has a CVSS v3 base score of 4.8 (MEDIUM severity), with vector string CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:L.

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