How severe is CVE-2023-39403?

CVE-2023-39403 has a CVSS 3.x base score of 9.1, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.

Is CVE-2023-39403 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (24th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-39403?

CVE-2023-39403 primarily affects Huawei Emui. In total, 9 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2023-39403?

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

When was CVE-2023-39403 published?

CVE-2023-39403 was published on 2023-08-13 and last updated on 2026-06-17.

CVE-2023-39403

CVE-2023-39403 is a critical-severity vulnerability in Huawei Emui with a CVSS 3.x base score of 9.1. 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-358.

Key facts

Severity: Critical (CVSS 3.x base score 9.1)
EPSS exploit prediction: 0% (24th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-358
Affected product: Huawei Emui
Published: 2023-08-13
Last modified: 2026-06-17

Description

Parameter verification vulnerability in the installd module. Successful exploitation of this vulnerability may cause sandbox files to be read and written without authorization.

Frequently asked questions

What is CVE-2023-39403?: Parameter verification vulnerability in the installd module. Successful exploitation of this vulnerability may cause sandbox files to be read and written without authorization.
How severe is CVE-2023-39403?: CVE-2023-39403 has a CVSS 3.x base score of 9.1, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.
Is CVE-2023-39403 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (24th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-39403?: CVE-2023-39403 primarily affects Huawei Emui. In total, 9 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2023-39403?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2023-39403 published?: CVE-2023-39403 was published on 2023-08-13 and last updated on 2026-06-17.

References

Affected products (9)

cpe:2.3:o:huawei:emui:11.0.1:*:*:*:*:*:*:*
cpe:2.3:o:huawei:emui:12.0.0:*:*:*:*:*:*:*
cpe:2.3:o:huawei:emui:12.0.1:*:*:*:*:*:*:*
cpe:2.3:o:huawei:emui:13.0.0:*:*:*:*:*:*:*
cpe:2.3:o:huawei:harmonyos:2.0.0:*:*:*:*:*:*:*
cpe:2.3:o:huawei:harmonyos:2.0.1:*:*:*:*:*:*:*
cpe:2.3:o:huawei:harmonyos:2.1.0:*:*:*:*:*:*:*
cpe:2.3:o:huawei:harmonyos:3.0.0:*:*:*:*:*:*:*
cpe:2.3:o:huawei:harmonyos:3.1.0:*:*:*:*:*:*:*

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