CVE-2026-122130

    Dashboard / Vulnerabilities / CVE-2026-122130

    CVE-2026-122130

    Published: 4 Nov 2026Last Modified: 7 Nov 2026

    Summary: CESNET ipfixcol2 2.3.0 before 2.9.0 Buffer Overflow via Forwarder Output Plugin

    Details: 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.

    References: https://github.com/CESNET/ipfixcol2/releases/tag/v2.9.0, https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/122xxx/CVE-2026-122130.json, https://nvd.nist.gov/vuln/detail/CVE-2026-122130, https://www.vulncheck.com/advisories/cesnet-ipfixcol2-2.3.0-before-2.9.0-buffer-overflow-via-forwarder-output-plugin, https://github.com/CESNET/ipfixcol2/commit/ad206f6217257b06b139f1b2bce50d52f5bc6acb, https://github.com/CESNET/ipfixcol2, https://github.com/CESNET/ipfixcol2/blob/v2.8.0/src/plugins/output/forwarder/src/Message.cpp#L134-L156

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- ee21c379ce5fda9475de08348b1ebc9166308bae
    Fixed -c731deb5486f8b8aaa1ff476d833bf8418130118

    Affected versions

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High
    CVE-2026-122130 | CVE-DB