CVE-2025-59147 | Suricata is Vulnerable to Detection Bypass via Crafted Multiple SYN Packets

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.

Published: 2025-10-01 Last update: 2025-10-06 Assigner: [email protected] Source: [email protected]
NVD Status：Analyzed，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2025-59147 is rated Low Risk (35.7/100): CVSS High severity, with low exploitation likelihood (EPSS 0.05%). Monitor for updates and reassess as exploit intelligence or EPSS changes.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2025-59147

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-04-27 0.05% 0.05% +0.01%
2 2026-04-21 0.06% 0.05% -0.01%
3 2026-04-13 — 0.06% —

Full EPSS history (6 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2025-59147

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.5 3.1 HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:N)
Service keeps running; no real outage angle.
 3.9 3.6 [email protected]

Weakness enumeration for CVE-2025-59147

OS Trackers for CVE-2025-59147

vendor priority summary link
alpine high CVE-2025-59147: 1 source package rows (suricata); 2 state rows across 2 repos (3.23-community, edge-community); fixed 0, open 2. https://security.alpinelinux.org/vuln/CVE-2025-59147
debian not yet assigned CVE-2025-59147 not yet assigned priority: Debian including 1 source packages (suricata), 4 status rows across 4 suites (bullseye, forky, sid, trixie): resolved 3, open 1. https://security-tracker.debian.org/tracker/CVE-2025-59147
ubuntu medium CVE-2025-59147 medium priority: Ubuntu including 1 source packages (suricata), 7 status rows across 7 suites (bionic, jammy, noble, plucky, questing, upstream, xenial): needs-triage 5, ignored 1, released 1. https://ubuntu.com/security/CVE-2025-59147

Affected software / configurations for CVE-2025-59147

Vendor Product Version Raw CPE
oisf suricata < 7.0.12 cpe:2.3:a:oisf:suricata:*:*:*:*:*:*:*:*
oisf suricata 8.0.0 cpe:2.3:a:oisf:suricata:8.0.0:-:*:*:*:*:*:*
oisf suricata 8.0.0 cpe:2.3:a:oisf:suricata:8.0.0:beta1:*:*:*:*:*:*
oisf suricata 8.0.0 cpe:2.3:a:oisf:suricata:8.0.0:rc1:*:*:*:*:*:*

References for CVE-2025-59147

cvelogic Threat Intelligence