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Vulnerability Assessment

Weakness
CWE
CWE-20
OWASP Top 10:2025
A05:2025 - Injection
ASVS 5.0
V2 - Validation and Business Logic Input validation, allowlisting
Impact

CVSS score of 7.5 (HIGH). Attack characteristics: network attack vector, low complexity, no privileges required, no user interaction not required.
Exploit ScenarioDerived

This vulnerability can be exploited remotely over the network. Successful exploitation could compromise the high-severity affected system.
This Week Schedule remediation this week. Why: HIGH severity (CVSS 7.0-8.9).
No patch listed yet 1.7% exploitation probability (EPSS)

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AnalysisAI

Some Huawei S series switches have a DoS vulnerability. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.

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Technical ContextAI · show details

This vulnerability is classified under CWE-20. Some Huawei S series switches have a DoS vulnerability. An unauthenticated remote attacker can send crafted packets to the affected device to exploit this vulnerability. Due to insufficient verification of the packets, successful exploitation may cause the device reboot and denial of service (DoS) condition. (Vulnerability ID: HWPSIRT-2019-03109) Affected products include: Huawei S12700 Firmware, Huawei S1700 Firmware, Huawei S2300 Firmware, Huawei S2700 Firmware, Huawei S5300 Firmware.

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Severity by source

NVD PRIMARY 7.5 HIGH
AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

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

DescriptionNVD

Some Huawei S series switches have a DoS vulnerability. An unauthenticated remote attacker can send crafted packets to the affected device to exploit this vulnerability. Due to insufficient verification of the packets, successful exploitation may cause the device reboot and denial of service (DoS) condition. (Vulnerability ID: HWPSIRT-2019-03109)

Threat Intelligence Overview

EPSS Score
1.7%
Top 26% 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 HIGH
CISA KEV No
Public POC No
EPSS 1.7%
Patch available No
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
Scheduled
Exploitation· derived
None
System Exposure· derived
Open
Automatable· derived
Yes
Human Impact· derived
Medium

Priority Score

40
Low Medium High Critical
KEV: 0
EPSS: +2
CVSS: +38
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

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:s12700_firmware:v200r005c00:*:*:*:*:*:*:*
cpe:2.3:o:huawei:s12700_firmware:v200r006c00:*:*:*:*:*:*:*
cpe:2.3:o:huawei:s12700_firmware:v200r007c00:*:*:*:*:*:*:*
cpe:2.3:o:huawei:s12700_firmware:v200r008c00:*:*:*:*:*:*:*
cpe:2.3:o:huawei:s12700_firmware:v200r010c00:*:*:*:*:*:*:*
cpe:2.3:o:huawei:s12700_firmware:v200r011c10:*:*:*:*:*:*:*
cpe:2.3:o:huawei:s12700_firmware:v200r012c00:*:*:*:*:*:*:*
cpe:2.3:o:huawei:s12700_firmware:v200r013c00:*:*:*:*:*:*:*
cpe:2.3:o:huawei:s1700_firmware:v200r008c00:*:*:*:*:*:*:*
cpe:2.3:o:huawei:s1700_firmware:v200r009c00:*:*:*:*:*:*:*
cpe:2.3:o:huawei:s1700_firmware:v200r010c00:*:*:*:*:*:*:*
cpe:2.3:o:huawei:s1700_firmware:v200r011c10:*:*:*:*:*:*:*
cpe:2.3:o:huawei:s1700_firmware:v200r012c00:*:*:*:*:*:*:*
cpe:2.3:o:huawei:s1700_firmware:v200r013c00:*:*:*:*:*:*:*
cpe:2.3:o:huawei:s2300_firmware:v200r003c00:*:*:*:*:*:*:*
cpe:2.3:o:huawei:s2300_firmware:v200r005c00:*:*:*:*:*:*:*
cpe:2.3:o:huawei:s2300_firmware:v200r008c00:*:*:*:*:*:*:*
cpe:2.3:o:huawei:s2300_firmware:v200r010c00:*:*:*:*:*:*:*
cpe:2.3:o:huawei:s2300_firmware:v200r011c10:*:*:*:*:*:*:*
cpe:2.3:o:huawei:s2300_firmware:v200r012c00:*:*:*:*:*:*:*
+ 78 more

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Same weakness CWE-20 – Improper Input Validation

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CVE-2021-44228 CRITICAL POC
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CVE-2022-47966 CRITICAL POC
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CVE-2023-22515 CRITICAL POC
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CVE-2009-0927 HIGH POC
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CVE-2017-9791 CRITICAL POC
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CVE-2017-15944 CRITICAL POC
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CVE-2019-0604 CRITICAL POC
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Same technique Denial Of Service

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CVE-2015-5119 CRITICAL POC
9.8
CVE-2011-2462 CRITICAL POC
9.8
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
CVE-2015-5122 CRITICAL POC
9.8
CVE-2011-0609 HIGH POC
7.8

References

Advisories & patches
ADVISORY https://www.huawei.com/en/psirt/security-advisories/huawei-sa-20190522-01-switch-en REF http://www.huawei.com/en/psirt/security-advisories/huawei-sa-20190522-01-switch-en

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