How severe is CVE-2021-20793?

CVE-2021-20793 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2021-20793 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (23rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-20793?

CVE-2021-20793 primarily affects Sony Audio Usb Driver. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2021-20793?

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-2021-20793 published?

CVE-2021-20793 was published on 2021-08-26 and last updated on 2026-06-17.

CVE-2021-20793

CVE-2021-20793 is a high-severity vulnerability in Sony Audio Usb Driver with a CVSS 3.x base score of 7.8. 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-427.

Key facts

Severity: High (CVSS 3.x base score 7.8)
CVSS v2: 4.4
EPSS exploit prediction: 0% (23rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-427
Affected product: Sony Audio Usb Driver
Published: 2021-08-26
Last modified: 2026-06-17

Description

Untrusted search path vulnerability in the installer of Sony Audio USB Driver V1.10 and prior and the installer of HAP Music Transfer Ver.1.3.0 and prior allows an attacker to gain privileges and execute arbitrary code via a Trojan horse DLL in an unspecified directory.

Frequently asked questions

What is CVE-2021-20793?: Untrusted search path vulnerability in the installer of Sony Audio USB Driver V1.10 and prior and the installer of HAP Music Transfer Ver.1.3.0 and prior allows an attacker to gain privileges and execute arbitrary code via a Trojan horse DLL in an unspecified directory.
How severe is CVE-2021-20793?: CVE-2021-20793 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-20793 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (23rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-20793?: CVE-2021-20793 primarily affects Sony Audio Usb Driver. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2021-20793?: 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-2021-20793 published?: CVE-2021-20793 was published on 2021-08-26 and last updated on 2026-06-17.

References

Affected products (2)

cpe:2.3:a:sony:audio_usb_driver:*:*:*:*:*:*:*:*
cpe:2.3:a:sony:hap_music_transfer:*:*:*:*:*:*:*:*

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