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Vulnerability Assessment

Weakness
CWE
CWE-476
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.

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Impact

CVSS score of 5.5 (MEDIUM). Attack characteristics: local attack vector, low complexity, low privileges required, no user interaction not required.
Exploit ScenarioDerived

A local attacker with access to the system could crash the application by dereferencing a null pointer.
This Month Plan within 30 days. Why: MEDIUM severity (CVSS 4.0-6.9).
No patch listed yet 0.2% exploitation probability (EPSS)

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AnalysisAI

Certain Huawei products (AP2000;IPS Module;NGFW Module;NIP6300;NIP6600;NIP6800;S5700;SVN5600;SVN5800;SVN5800-C;SeMG9811;Secospace AntiDDoS8000;Secospace USG6300;Secospace USG6500;Secospace. Rated medium severity (CVSS 5.5), this vulnerability is low attack complexity. No vendor patch available.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Check pointers before dereferencing. Use static analysis tools to detect null pointer paths.

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Technical ContextAI · show details

This vulnerability is classified as NULL Pointer Dereference (CWE-476), which allows attackers to crash the application by dereferencing a null pointer. Certain Huawei products (AP2000;IPS Module;NGFW Module;NIP6300;NIP6600;NIP6800;S5700;SVN5600;SVN5800;SVN5800-C;SeMG9811;Secospace AntiDDoS8000;Secospace USG6300;Secospace USG6500;Secospace USG6600;USG6000V;eSpace U1981) have a null pointer dereference vulnerability. The system dereferences a pointer that it expects to be valid, but is NULL. A local attacker could exploit this vulnerability by sending crafted parameters. A successful exploit could cause a denial of service and the process reboot. Affected products include: Huawei Ap2000 Firmware, Huawei Ips Firmware, Huawei Ngfw Firmware, Huawei Nip6300 Firmware, Huawei Nip6600 Firmware.

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  • Exploit and PoC references, threat intelligence from 22 sources
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Severity by source

NVD PRIMARY 5.5 MEDIUM
AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

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

DescriptionNVD

Certain Huawei products (AP2000;IPS Module;NGFW Module;NIP6300;NIP6600;NIP6800;S5700;SVN5600;SVN5800;SVN5800-C;SeMG9811;Secospace AntiDDoS8000;Secospace USG6300;Secospace USG6500;Secospace USG6600;USG6000V;eSpace U1981) have a null pointer dereference vulnerability. The system dereferences a pointer that it expects to be valid, but is NULL. A local attacker could exploit this vulnerability by sending crafted parameters. A successful exploit could cause a denial of service and the process reboot.

Threat Intelligence Overview

EPSS Score
0.2%
Top 89% exploitable
Data Quality
2 sources
Confidence: Low
NVD CVE.org EPSS

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 MEDIUM
CISA KEV No
Public POC No
EPSS 0.2%
Patch available No
Active threat No
Deciding rule
MEDIUM severity (CVSS 4.0-6.9)
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
Defer
Exploitation· derived
None
System Exposure· derived
Small
Automatable· derived
No
Human Impact· derived
Medium

Priority Score

28
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +28
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

Null Pointer Dereference MEDIUM

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 MEDIUM

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

Affected Products (CPE)NVD

cpe:2.3:o:huawei:ap2000_firmware:v200r005c30:*:*:*:*:*:*:*
cpe:2.3:o:huawei:ap2000_firmware:v200r006c10:*:*:*:*:*:*:*
cpe:2.3:o:huawei:ap2000_firmware:v200r006c20:*:*:*:*:*:*:*
cpe:2.3:o:huawei:ap2000_firmware:v200r007c10:*:*:*:*:*:*:*
cpe:2.3:o:huawei:ap2000_firmware:v200r007c20:*:*:*:*:*:*:*
cpe:2.3:o:huawei:ap2000_firmware:v200r008c00:*:*:*:*:*:*:*
cpe:2.3:o:huawei:ap2000_firmware:v200r008c10:*:*:*:*:*:*:*
cpe:2.3:o:huawei:ap2000_firmware:v200r009c00:*:*:*:*:*:*:*
cpe:2.3:o:huawei:ips_firmware:v500r001c00spc300:*:*:*:*:*:*:*
cpe:2.3:o:huawei:ips_firmware:v500r001c00spc500:*:*:*:*:*:*:*
cpe:2.3:o:huawei:ips_firmware:v500r001c00sph303:*:*:*:*:*:*:*
cpe:2.3:o:huawei:ips_firmware:v500r001c00sph508:*:*:*:*:*:*:*
cpe:2.3:o:huawei:ips_firmware:v500r001c20:*:*:*:*:*:*:*
cpe:2.3:o:huawei:ips_firmware:v500r001c20spc100:*:*:*:*:*:*:*
cpe:2.3:o:huawei:ips_firmware:v500r001c20spc100pwe:*:*:*:*:*:*:*
cpe:2.3:o:huawei:ips_firmware:v500r001c20spc200:*:*:*:*:*:*:*
cpe:2.3:o:huawei:ips_firmware:v500r001c20spc200b062:*:*:*:*:*:*:*
cpe:2.3:o:huawei:ips_firmware:v500r001c20spc200pwe:*:*:*:*:*:*:*
cpe:2.3:o:huawei:ips_firmware:v500r001c20spc300b078:*:*:*:*:*:*:*
cpe:2.3:o:huawei:ips_firmware:v500r001c20spc300pwe:*:*:*:*:*:*:*
+ 224 more

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Same weakness CWE-476 – NULL Pointer Dereference

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CVE-2016-0742 HIGH
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CVE-2016-4957 HIGH
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Same technique Denial Of Service

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CVE-2015-5119 CRITICAL POC
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CVE-2011-0611 HIGH POC
8.8
CVE-2012-1889 HIGH POC
8.8
CVE-2012-0507 CRITICAL POC
9.8
CVE-2014-1761 HIGH POC
7.8
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References

Advisories & patches
ADVISORY https://www.huawei.com/en/psirt/security-advisories/huawei-sa-20191211-01-ssp-en

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