CVE-2020-9212Network attack vector

Information disclosure via incorrect login processing

Published Mar 22, 2021 · Updated Aug 4, 2024

Improper information processing in Huawei USG9500 firmware allows remote attackers to disclose information during device login. The device incorrectly handles information in the login path, but Huawei has not disclosed the affected operation or the untrusted input involved. Network access to the device is required, and the documented consequence is information disclosure without integrity or availability impact.

CVSS severity5.3
Medium
EPSS probability0.60%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper information processing in Huawei USG9500 firmware allows remote attackers to disclose information during device login. The device incorrectly handles information in the login path, but Huawei has not disclosed the affected operation or the untrusted input involved. Network access to the device is required, and the documented consequence is information disclosure without integrity or availability impact.

The record

CVE
CVE-2020-9212
Published
Mar 22, 2021
Updated
Aug 4, 2024
Vendor
Huawei Technologies Co., Ltd.
Product
USG9500
Classifications
Unavailable
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 22, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=V500R005C00SPC100,V500R005C00SPC200,V500R005C20SPC300,V500R005C20SPC500,V500R005C20SPC600

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Huawei Technologies Co., Ltd. · USG9500version=V500R005C00SPC100,V500R005C00SPC200,V500R005C20SPC300,V500R005C20SPC500,V500R005C20SPC600

Published CVSS scores

4.9HuaweiCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N/E:F/RL:O/RC:C
6.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
5.3HuaweiCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
4.0NIST NVDAV:N/AC:L/Au:S/C:P/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

No sourced classifications are available.

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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