How severe is CVE-2021-42923?

CVE-2021-42923 has a CVSS 3.x base score of 7.3, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2021-42923 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (11th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-42923?

CVE-2021-42923 affects Showmypc. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-42923?

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-2021-42923 published?

CVE-2021-42923 was published on 2022-07-18 and last updated on 2026-07-09.

CVE-2021-42923

CVE-2021-42923 is a high-severity vulnerability in Showmypc with a CVSS 3.x base score of 7.3. 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-427.

Key facts

Severity: High (CVSS 3.x base score 7.3)
EPSS exploit prediction: 0% (11th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-427
Affected product: Showmypc
Published: 2022-07-18
Last modified: 2026-07-09

Description

ShowMyPC 3606 on Windows suffers from a DLL hijack vulnerability. If an attacker overwrites the file %temp%\ShowMyPC\-ShowMyPC3606\wodVPN.dll, it will run any malicious code contained in that file. The code will run with normal user privileges unless the user specifically runs ShowMyPC as administrator.

Frequently asked questions

What is CVE-2021-42923?: ShowMyPC 3606 on Windows suffers from a DLL hijack vulnerability. If an attacker overwrites the file %temp%\ShowMyPC\-ShowMyPC3606\wodVPN.dll, it will run any malicious code contained in that file. The code will run with normal user privileges unless the user specifically runs ShowMyPC as administrator.
How severe is CVE-2021-42923?: CVE-2021-42923 has a CVSS 3.x base score of 7.3, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-42923 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (11th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-42923?: CVE-2021-42923 affects Showmypc. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-42923?: 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-2021-42923 published?: CVE-2021-42923 was published on 2022-07-18 and last updated on 2026-07-09.

References

https://f20.be/cves/showmypc-cve-2021-42923

Affected products (1)

cpe:2.3:a:showmypc:showmypc:3606:*:*:*:*:*:*:*

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