How severe is CVE-2015-4421?

CVE-2015-4421 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with high attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2015-4421 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (56th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2015-4421?

CVE-2015-4421 affects Huawei Mate 7 Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2015-4421?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2015-4421 published?

CVE-2015-4421 was published on 2017-10-19 and last updated on 2026-06-17.

CVE-2015-4421

CVE-2015-4421 is a high-severity vulnerability in Huawei Mate 7 Firmware with a CVSS 3.x base score of 7.5. 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-119.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 7.6
EPSS exploit prediction: 1% (56th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-119
Affected product: Huawei Mate 7 Firmware
Published: 2017-10-19
Last modified: 2026-06-17

Description

The tzdriver module in Huawei Mate 7 (Mate7-TL10) smartphones before V100R001CHNC00B126SP03 allows local users to gain privileges or cause a denial of service (memory corruption) via an unspecified input.

Frequently asked questions

What is CVE-2015-4421?: The tzdriver module in Huawei Mate 7 (Mate7-TL10) smartphones before V100R001CHNC00B126SP03 allows local users to gain privileges or cause a denial of service (memory corruption) via an unspecified input.
How severe is CVE-2015-4421?: CVE-2015-4421 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with high attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2015-4421 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (56th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2015-4421?: CVE-2015-4421 affects Huawei Mate 7 Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2015-4421?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2015-4421 published?: CVE-2015-4421 was published on 2017-10-19 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:o:huawei:mate_7_firmware:*:*:*:*:*:*:*:*

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