CVE-2020-9085Network attack vector

Process interruption via malformed POST parameter

Published Dec 27, 2024 · Updated Dec 27, 2024

NULL pointer dereference in Huawei HUAWEI 4G Router B612 firmware allows remote attackers to interrupt a process via crafted POST messages. Huawei identifies insufficient validation of an unspecified POST-message parameter but does not disclose the affected handler or pointer operation. Network access to the router is sufficient; successful exploitation affects availability by causing an unspecified process to behave abnormally.

CVSS severity5.3
Medium
EPSS probability0.34%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

NULL pointer dereference in Huawei HUAWEI 4G Router B612 firmware allows remote attackers to interrupt a process via crafted POST messages. Huawei identifies insufficient validation of an unspecified POST-message parameter but does not disclose the affected handler or pointer operation. Network access to the router is sufficient; successful exploitation affects availability by causing an unspecified process to behave abnormally.

The record

CVE
CVE-2020-9085
Published
Dec 27, 2024
Updated
Dec 27, 2024
Vendor
MindSpore
Product
HUAWEI 4G Router B612
Classifications
CWE-476, T1499
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Dec 27, 2024CVE publishedPublication date reported by the CVE source.
  2. Dec 27, 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=B612s-25dTCPU-V100R001B192D03SP00C234
  2. Affected versionversion=B612s-25dTCPU-V100R001B192D03SP00C287
  3. Affected versionversion=B612s-25dTCPU-V100R001B192D05SP00C00

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

MindSpore · HUAWEI 4G Router B612version=B612s-25dTCPU-V100R001B192D03SP00C234; version=B612s-25dTCPU-V100R001B192D03SP00C287; version=B612s-25dTCPU-V100R001B192D05SP00C00

Published CVSS scores

4.9HuaweiCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:F/RL:O/RC:C
5.3HuaweiCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-476NULL Pointer Dereference
T1499Endpoint Denial of Service

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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