CVE-2025-59147

Name: CVE-2025-59147
Creator: NVD / NIST
Published: 2025-10-01T20:18:38.267+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 0.34%

Last modified Jun 17, 2026

CVE-2025-59147 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. 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. EPSS estimates a 0.34% chance of exploitation in the next 30 days.

Description

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.

Metrics

CVSS 3.1

7.5/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

EPSS Probability

0.34%

25.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-358

Affected Software

Vendor	Product	Versions
Oisf	Suricata	< 7.0.12
Oisf	Suricata	8.0.0

References

https://forum.suricata.io/t/suricata-8-0-1-and-7-0-12-released/6018Release Notes
https://github.com/OISF/suricata/commit/be6315dba0d9101b11d16e9dacfe2822b3792f1bPatch
https://github.com/OISF/suricata/commit/e91b03c90385db15e21cf1a0e85b921bf92b039ePatch
https://github.com/OISF/suricata/security/advisories/GHSA-v8hv-6v7x-4c2rIssue Tracking, Third Party Advisory

Timeline

Published: Oct 1, 2025
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2025-59147?

How severe is CVE-2025-59147?

CVE-2025-59147 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 0.34% probability of exploitation in the next 30 days.

How do I fix CVE-2025-59147?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2025-59147?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST