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CVE-2026-122127 CESNET ipfixcol2 2.7.1 before 2.9.0 Heap Buffer Overflow via TCP LZ4 Decoder

🗓️ 04 Nov 2026 20:36:48Reported by VulnCheckType 
cvelist
 cvelist
🔗 www.cve.org👁 19 Views

Unauthenticated heap buffer overflow in CESNET ipfixcol2 Lz4Decoder.cpp causes DoS.

Related
Affected
Refs
ReporterTitlePublishedViews
Family
circl
Circl
CVE-2026-122127
4 Nov 202620:48
–circl
cve
CVE
CVE-2026-122127
4 Nov 202620:36
–cve
debiancve
Debian CVE
CVE-2026-122127
6 Nov 202602:51
–debiancve
euvd
EUVD
EUVD-2026-117082
4 Nov 202620:36
–euvd
mend
Mend
CVE-2026-122127
4 Nov 202620:36
–mend
nvd
NVD
CVE-2026-122127
4 Nov 202621:18
–nvd
osv_debian
osv_debian
DEBIAN-CVE-2026-122127
4 Nov 202621:18
–osv_debian
osv_ubuntu
osv_ubuntu
UBUNTU-CVE-2026-122127
5 Nov 202600:00
–osv_ubuntu
ptsecurity
Positive Technologies
PT-2026-137150
4 Nov 202600:00
–ptsecurity
rapid7
Rapid7 Vulnerability Database (full)
CVE-2026-122127: CESNET ipfixcol2: CESNET ipfixcol2 2.7.1 before 2.9.0 contains a heap-based buffer overflow in Lz4Decoder.cpp that allows unauthenticated…
4 Nov 202600:00
–rapid7
Rows per page
[
  {
    "vendor": "CESNET",
    "product": "ipfixcol2",
    "defaultStatus": "unaffected",
    "versions": [
      {
        "version": "2.7.1",
        "status": "affected",
        "lessThan": "2.9.0",
        "versionType": "semver"
      }
    ]
  }
]

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04 Nov 2026 20:36Current
CVSS 3.17.5
CVSS 48.7
EPSS0.00387
SSVC
19