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Fencer Vulns
high 7.5

CVE-2025-59147 json

Suricata is Vulnerable to Detection Bypass via Crafted Multiple SYN Packets

published 2025-10-01 13 mo ago modified 2026-10-12 27 d ago also EUVD-2025-33226

cvss
7.5
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.4%
EPSS 0.4% chance of exploitation in 30 days, percentile 30%
public exploits
0
none known

Summary

Suricata is a network IDS, IPS and NSM engine developed by the OISF (Open Information Security Foundation) and the Suricata community. Versions 7.0.11 and below, as well as 8.0.0, are vulnerable to detection bypass when crafted traffic sends multiple SYN packets with different sequence numbers within the same flow tuple, which can cause Suricata to fail to pick up the TCP session. In IDS mode this can lead to a detection and logging bypass. In IPS mode this will lead to the flow getting blocked. This issue is fixed in versions 7.0.12 and 8.0.1.

Patch / fix

  • oisf suricata 7.0.12, 8.0.1
  • openinfosecfoundation suricata 7.0.12, 8.0.1
  • suricata-ids suricata 7.0.12, 8.0.1
  • suricata Debian 13 1:7.0.10-1+deb13u1
  • suricata Debian 14 1:8.0.1-1

debian advisories DEBIAN-CVE-2025-59147

  • suricata openSUSE Tumbleweed 8.0.1-1.1

opensuse advisories openSUSE-SU-2025:15592-1

  • suricata Alpine 3.24 8.0.1-r0

alpine advisories ALPINE-CVE-2025-59147

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2025-59147 updated cvss 7.5

suricata-ids: Suricata is Vulnerable to Detection Bypass via Crafted Multiple SYN Packets

  • Red Hat All currently supported Red Hat products
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
13 mo ago

Exploit prediction

0.37% chance of exploitation in the next 30 days, higher than 30% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Affected products

  • OISF suricata

Classification

Weakness
  • CWE-358 Improperly Implemented Security Check for Standard

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.

CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.