How severe is CVE-2021-22303?

CVE-2021-22303 has a CVSS 3.x base score of 3.3, rated low severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity none, and availability low.

Is CVE-2021-22303 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (40th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-22303?

CVE-2021-22303 affects Huawei Taurus-al00a Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-22303?

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

When was CVE-2021-22303 published?

CVE-2021-22303 was published on 2021-02-06 and last updated on 2026-06-17.

CVE-2021-22303

CVE-2021-22303 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-415.

Key facts

Severity: Low (CVSS 3.x base score 3.3)
CVSS v2: 4.3
EPSS exploit prediction: 1% (40th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-415
Affected product: Huawei Taurus-al00a Firmware
Published: 2021-02-06
Last modified: 2026-06-17

Description

There is a pointer double free vulnerability in Taurus-AL00A 10.0.0.1(C00E1R1P1). There is a lack of muti-thread protection when a function is called. Attackers can exploit this vulnerability by performing malicious operation to cause pointer double free. This may lead to module crash, compromising normal service.

Frequently asked questions

What is CVE-2021-22303?: There is a pointer double free vulnerability in Taurus-AL00A 10.0.0.1(C00E1R1P1). There is a lack of muti-thread protection when a function is called. Attackers can exploit this vulnerability by performing malicious operation to cause pointer double free. This may lead to module crash, compromising normal service.
How severe is CVE-2021-22303?: CVE-2021-22303 has a CVSS 3.x base score of 3.3, rated low severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity none, and availability low.
Is CVE-2021-22303 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (40th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-22303?: CVE-2021-22303 affects Huawei Taurus-al00a Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-22303?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-22303 published?: CVE-2021-22303 was published on 2021-02-06 and last updated on 2026-06-17.

References

https://www.huawei.com/en/psirt/security-advisories/huawei-sa-20210127-02-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-2021-22304 — Low (CVSS 3.3): There is a use after free vulnerability in Taurus-AL00A 10.0.0.1(C00E1R1P1). A module may refer to some memory after it…

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CVE-2020-37239 — Critical (CVSS 9.8): libbabl 0.1.62 contains a broken double free detection vulnerability that allows attackers to bypass memory safety…
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CVE-2026-31609 — Critical (CVSS 9.8): In the Linux kernel, the following vulnerability has been resolved: smb: client: avoid double-free in…
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