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Suricata CVE-2025-59150

| EUVDEUVD-2025-33222 HIGH
NULL Pointer Dereference (CWE-476)
2025-10-01 security-advisories@github.com
7.5
CVSS 3.1 · Vendor: github
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Vulnerability Assessment

Weakness
CWE
OWASP Top 10:2025
A10:2025 - Mishandling of Exceptional Conditions
ASVS 5.0
V16 - Security Logging and Error Handling Null pointer safety, defensive checks
MITRE ATT&CK

1 technique across 1 tactic: Impact

The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up.

Impact

Typically causes application crash (denial of service). In some cases, may be exploitable for code execution on systems without memory protection. With a CVSS score of 7.5 (HIGH), this represents a significant risk.

Exploit ScenarioDerived

An attacker provides input that causes a code path where a pointer is dereferenced without a prior NULL check, crashing the application.

This Week Schedule remediation this week. Why: HIGH severity (CVSS 7.0-8.9).
Patch available 0.2% exploitation probability (EPSS)

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AnalysisAIv1 – Mar 13, 2026

Suricata is a network IDS, IPS and NSM engine developed by the OISF (Open Information Security Foundation) and the Suricata community. Version 8.0.0's usage of the tls.subjectaltname keyword can lead to a segmentation fault when the decoded subjectaltname contains a NULL byte. This issue is fixed in version 8.0.1. To workaround this issue, disable rules using the tls.subjectaltname keyword.

Earlier versions of this analysis (1)
v1 Mar 13, 2026 - 18:18 CVSS 7.5

RemediationAI

A vendor patch is available — apply it immediately. Add NULL checks before pointer dereference operations. Use static analysis to identify potential NULL pointer issues. Enable compiler warnings.

Affected VersionsENISA

suricata 8.0.0, < 8.0.1

Affected Packages

euvd suricata_8_0_0 fix: 8.0.1

Source: OSV (Open Source Vulnerabilities)

Affects your stack

Affects 1 package in euvd

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

A NULL pointer dereference occurs when the application attempts to use a pointer that has not been initialized or has been set to NULL.

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  • Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

Vendor (github) PRIMARY 7.5 HIGH
AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Ubuntu MEDIUM
SUSE HIGH

Primary rating from Vendor (github).

CVSS VectorVendor: github

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

Lifecycle Timeline

3
PoC Detected
Oct 23, 2025 - 14:15 vuln.today
Public exploit code
Patch released
Oct 23, 2025 - 14:15 nvd
Patch available
CVE Published
Oct 01, 2025 - 21:16 nvd
HIGH 7.5

Executive ViewAI

Why It Matters

Organizations using Suricata face notable risk from CVE-2025-59150, a null pointer dereference vulnerability rated CVSS 7.5. Exploitation could compromise the security of affected deployments. Proof-of-concept code is publicly available, increasing the risk of exploitation. A patch is available and should be applied as part of regular vulnerability management.

Business Impact: High
Compensating Controls

Apply vendor patch. If immediate patching is not feasible: (1) Implement network-level access controls to limit exposure; (2) Enable enhanced monitoring and alerting; (3) Apply principle of least privilege.

Threat Intelligence Overview

EPSS Score
0.2%
Top 64% exploitable
Exploit
POC
Public exploit code exists
Data Quality
7 sources
Confidence: High

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue
Severity HIGH
CISA KEV No
Public POC Yes
EPSS 0.2%
Patch available Yes
Active threat No
Deciding rule
HIGH severity (CVSS 7.0-8.9)
What every action level means
Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.
Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.
This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.
This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.
Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived
Out-of-Cycle
Exploitation· derived
Poc
System Exposure· derived
Open
Automatable· derived
Yes
Human Impact
High

Priority Score

58
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +38
PoC: +20
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

A null pointer dereference occurs when a program attempts to access memory through a pointer that has been set to NULL (address 0x0).

Denial of Service attacks render applications or systems unavailable by overwhelming resources or triggering failure conditions.

CVE-2025-12490 HIGH
8.8 Nov 06

Netgate pfSense CE Suricata Path Traversal Remote Code Execution Vulnerability. Rated high severity (CVSS 8.8), this vul

CVE-2018-1000167 HIGH POC
7.8 Apr 18

OISF suricata-update version 1.0.0a1 contains an Insecure Deserialization vulnerability in the insecure yaml.load-Functi

CVE-2021-45098 HIGH POC
7.5 Dec 16

An issue was discovered in Suricata before 6.0.4. Rated high severity (CVSS 7.5), this vulnerability is remotely exploit

CVE-2019-10056 HIGH POC
7.5 Aug 28

An issue was discovered in Suricata 4.1.3. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, n

CVE-2019-10055 HIGH POC
7.5 Aug 28

An issue was discovered in Suricata 4.1.3. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, n

CVE-2019-10054 HIGH POC
7.5 Aug 28

An issue was discovered in Suricata 4.1.3. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, n

CVE-2019-10052 HIGH POC
7.5 Aug 28

An issue was discovered in Suricata 4.1.3. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, n

CVE-2019-10051 HIGH POC
7.5 Aug 28

An issue was discovered in Suricata 4.1.3. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, n

CVE-2019-1010279 HIGH POC
7.5 Jul 18

Open Information Security Foundation Suricata prior to version 4.1.3 is affected by: Denial of Service - TCP/HTTP detect

CVE-2018-14568 HIGH POC
7.5 Jul 23

Suricata before 4.0.5 stops TCP stream inspection upon a TCP RST from a server. Rated high severity (CVSS 7.5), this vul

CVE-2015-8954 CRITICAL
9.8 Mar 20

The MemcmpLowercase function in Suricata before 2.0.6 improperly excludes the first byte from comparisons, which might a

CVE-2023-35853 CRITICAL
9.8 Jun 19

In Suricata before 6.0.13, an adversary who controls an external source of Lua rules may be able to execute Lua code. Ra

Vendor StatusVendor

Ubuntu

Priority: Medium
suricata
Release Status Version
xenial needs-triage -
bionic needs-triage -
jammy needs-triage -
noble needs-triage -
upstream not-affected debian: Vulnerable code never present in a Debian released version, 8.0.x only issue
plucky ignored end of life, was needs-triage
questing needs-triage -

Debian

suricata
Release Status Fixed Version Urgency
bullseye fixed 1:6.0.1-3 -
bullseye (security) fixed 1:6.0.1-3+deb11u1 -
bookworm fixed 1:6.0.10-1 -
trixie fixed 1:7.0.10-1+deb13u2 -
forky, sid fixed 1:8.0.3-1 -
(unstable) not-affected - -

SUSE

Severity: High
Product Status
openSUSE Tumbleweed Fixed

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