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VULNERABILITIES

CVE-2026-122130 Details

Description

CESNET ipfixcol2 2.3.0 before 2.9.0 contains an integer overflow vulnerability in the Forwarder output plugin that allows unauthenticated IPFIX exporters to overflow a heap buffer by wrapping uint16_t message length counters. Attackers can send near-65535-byte data sets and large templates to a collector forwarding over TCP to crash it and perform 2-byte writes to attacker-influenced addresses.

Metrics

CVSS 3.x Severity and Vector Strings:

CNA: [email protected]CVSS-B:8.2 HIGHVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H

References to Advisories, Solutions, and Tools

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URLSource(s)Tag(s)
https://github.com/CESNET/ipfixcol2 [email protected]
https://github.com/CESNET/ipfixcol2/blob/v2.8.0/src/plugins/output/forwarder/src/Message.cpp#L134-L156 [email protected]
https://github.com/CESNET/ipfixcol2/commit/ad206f6217257b06b139f1b2bce50d52f5bc6acb [email protected]
https://github.com/CESNET/ipfixcol2/releases/tag/v2.9.0 [email protected]
https://www.vulncheck.com/advisories/cesnet-ipfixcol2-2.3.0-before-2.9.0-buffer-overflow-via-forwarder-output-plugin [email protected]

Weakness Enumeration

CWE-IDCWE NameSource
CWE-190Integer Overflow or Wraparound[email protected]

Affected Products

No affected product data is available for this CVE.

Change History

2 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2026-122130
NVD Published Date:
Nov 4, 2026
NVD Last Modified:
Nov 5, 2026
Source:
[email protected]
CVE-2026-122130 Details - Not Deferred