How severe is CVE-2021-22304?

CVE-2021-22304 has a CVSS 3.x base score of 3.3, rated low severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability low.

Is CVE-2021-22304 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (12th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-22304?

CVE-2021-22304 affects Huawei Taurus-al00a Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-22304?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2021-22304 published?

CVE-2021-22304 was published on 2021-02-06 and last updated on 2026-06-17.

CVE-2021-22304

CVE-2021-22304 is a low-severity vulnerability in Huawei Taurus-al00a Firmware with a CVSS 3.x base score of 3.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-416.

Key facts

Severity: Low (CVSS 3.x base score 3.3)
CVSS v2: 2.1
EPSS exploit prediction: 0% (12th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-416
Affected product: Huawei Taurus-al00a Firmware
Published: 2021-02-06
Last modified: 2026-06-17

Description

There is a use after free vulnerability in Taurus-AL00A 10.0.0.1(C00E1R1P1). A module may refer to some memory after it has been freed while dealing with some messages. Attackers can exploit this vulnerability by sending specific message to the affected module. This may lead to module crash, compromising normal service.

Frequently asked questions

What is CVE-2021-22304?: There is a use after free vulnerability in Taurus-AL00A 10.0.0.1(C00E1R1P1). A module may refer to some memory after it has been freed while dealing with some messages. Attackers can exploit this vulnerability by sending specific message to the affected module. This may lead to module crash, compromising normal service.
How severe is CVE-2021-22304?: CVE-2021-22304 has a CVSS 3.x base score of 3.3, rated low severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability low.
Is CVE-2021-22304 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (12th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-22304?: CVE-2021-22304 affects Huawei Taurus-al00a Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-22304?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-22304 published?: CVE-2021-22304 was published on 2021-02-06 and last updated on 2026-06-17.

References

https://www.huawei.com/en/psirt/security-advisories/huawei-sa-20210127-03-smartphone-en

Affected products (1)

cpe:2.3:o:huawei:taurus-al00a_firmware:10.0.0.1\(c00e1r1p1\):*:*:*:*:*:*:*

More vulnerabilities in Huawei Taurus-al00a Firmware

CVE-2021-22293 — High (CVSS 7.5): Some Huawei products have an inconsistent interpretation of HTTP requests vulnerability. Attackers can exploit this…
CVE-2021-22302 — High (CVSS 7.1): There is an out-of-bound read vulnerability in Taurus-AL00A 10.0.0.1(C00E1R1P1). A module does not verify the some…
CVE-2020-9093 — Medium (CVSS 5.5): There is a use after free vulnerability in Taurus-AL00A versions 10.0.0.1(C00E1R1P1). A module does not deal with…
CVE-2020-9087 — Medium (CVSS 5.5): Taurus-AL00A version 10.0.0.1(C00E1R1P1) has an out-of-bounds read vulnerability in XFRM module. An authenticated,…
CVE-2021-22303 — Low (CVSS 3.3): There is a pointer double free vulnerability in Taurus-AL00A 10.0.0.1(C00E1R1P1). There is a lack of muti-thread…

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CVE-2025-24085 — Critical (CVSS 10.0): A use after free issue was addressed with improved memory management. This issue is fixed in iOS 18.3 and iPadOS 18.3,…
CVE-2024-43102 — Critical (CVSS 10.0): Concurrent removals of certain anonymous shared memory mappings by using the UMTX_SHM_DESTROY sub-request of…
CVE-2021-32495 — Critical (CVSS 10.0): Radare2 has a use-after-free vulnerability in pyc parser's get_none_object function. Attacker can read freed memory…

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