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Fencer Vulns
high 7.5

CVE-2018-14568 json

Suricata before 4.0.5 stops TCP stream inspection upon a TCP RST from a server.

published 2018-07-23 8 y ago modified 2026-06-17 4 mo ago also EUVD-2018-6477

cvss
7.5
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
2.0%
EPSS 2.0% chance of exploitation in 30 days, percentile 80%
public exploits
0
none known

Summary

Suricata before 4.0.5 stops TCP stream inspection upon a TCP RST from a server. This allows detection bypass because Windows TCP clients proceed with normal processing of TCP data that arrives shortly after an RST (i.e., they act as if the RST had not yet been received).

Patch / fix

  • suricata-ids suricata 4.0.5
  • suricata Debian 14, Debian 13 1:4.0.5-1

debian advisories DEBIAN-CVE-2018-14568

  • suricata openSUSE Tumbleweed 8.0.0-1.1

opensuse advisories openSUSE-SU-2025:15394-1

Exploit prediction

2.00% chance of exploitation in the next 30 days, higher than 80% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • redmine.openinfosecfoundation.org https://redmine.openinfosecfoundation.org/issues/2501 referenced PoC, tagged "exploit" by a source, unverified
  • github.com https://github.com/kirillwow/ids_bypass referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.0 7.5 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
NVD 2.0 5.0 AV:N/AC:L/Au:N/C:N/I:P/A:N

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.