CVE-2021-22304

Module crash via message-triggered use-after-free

Published Feb 6, 2021 · Updated Aug 3, 2024

Use-after-free in Huawei Taurus-AL00A 10.0.0.1(C00E1R1P1) allows attackers to crash an affected module via a crafted message. The unnamed message-handling module accesses memory after freeing it while processing the crafted message; Huawei has not disclosed the module, message format, or code path. Exploitation requires delivery of the malicious message to the affected module and causes a module crash that interrupts normal service; no broader device compromise is established.

CVSS severity5.3
Medium
EPSS probability0.21%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Use-after-free in Huawei Taurus-AL00A 10.0.0.1(C00E1R1P1) allows attackers to crash an affected module via a crafted message. The unnamed message-handling module accesses memory after freeing it while processing the crafted message; Huawei has not disclosed the module, message format, or code path. Exploitation requires delivery of the malicious message to the affected module and causes a module crash that interrupts normal service; no broader device compromise is established.

The record

CVE
CVE-2021-22304
Published
Feb 6, 2021
Updated
Aug 3, 2024
Vendor
Huawei
Product
Taurus-AL00A
Classifications
CWE-416, T1499.004
Attack vector
local
Privileges
Unavailable

Timeline

How it unfolded

  1. Feb 6, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 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=10.0.0.1(C00E1R1P1)

What conditions does exploitation require?

Attack vectorlocal
Required privilegesUnavailable in this record.

What is affected?

Huawei · Taurus-AL00Aversion=10.0.0.1(C00E1R1P1)

Published CVSS scores

5.3HuaweiCVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L
2.1NIST NVDAV:L/AC:L/Au:N/C:N/I:N/A:P
4.9HuaweiCVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L/E:F/RL:O/RC:C
3.3NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/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.

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No observations available

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

Weakness, pattern, technique

CWE-416Use After Free
T1499.004Application or System Exploitation

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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