Usg9500 Firmware
CVE-2021-22360
MEDIUM
Vulnerability Assessment
| Weakness |
CWE
OWASP Top 10:2025
A06:2025 - Insecure Design
ASVS 5.0
V2 - Validation and Business Logic Resource allocation limits
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 | CVSS score of 4.9 (MEDIUM). Attack characteristics: network attack vector, low complexity, high privileges required, no user interaction not required. |
| Exploit ScenarioDerived | A remote attacker could exhaust system resources through uncontrolled allocation by sending crafted requests to the affected application. |
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Alert meAnalysisAI
There is a resource management error vulnerability in the verisions V500R001C60SPC500, V500R005C00SPC100, V500R005C00SPC200 of USG9500. Rated medium severity (CVSS 4.9), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
RemediationAI
No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Set resource limits, implement rate limiting, validate input sizes.
Affects your stack
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Technical ContextAI · show details
This vulnerability is classified as Allocation of Resources Without Limits (CWE-770), which allows attackers to exhaust system resources through uncontrolled allocation. There is a resource management error vulnerability in the verisions V500R001C60SPC500, V500R005C00SPC100, V500R005C00SPC200 of USG9500. An authentication attacker needs to perform specific operations to exploit the vulnerability on the affected device. Due to improper resource management of the function, the vulnerability can be exploited to cause service abnormal on affected devices. Affected products include: Huawei Usg9500 Firmware.
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Severity by source
AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
DescriptionNVD
There is a resource management error vulnerability in the verisions V500R001C60SPC500, V500R005C00SPC100, V500R005C00SPC200 of USG9500. An authentication attacker needs to perform specific operations to exploit the vulnerability on the affected device. Due to improper resource management of the function, the vulnerability can be exploited to cause service abnormal on affected devices.
Threat Intelligence Overview
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.
What every action level means
SSVC AssessmentENISA
Priority Score
Attack Technique
Denial of Service attacks render applications or systems unavailable by overwhelming resources or triggering failure conditions.
Affected Products (CPE)NVD
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GitHub PoC
Exploit-DB