How severe is CVE-2023-42757?

CVE-2023-42757 has a CVSS 3.x base score of 4.2, rated medium severity. It is exploitable over local access with low attack complexity, requires high privileges and user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2023-42757 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (19th percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2023-42757?

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

Does CVE-2023-42757 have an EU (EUVD) identifier?

Yes. CVE-2023-42757 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2023-47189.

When was CVE-2023-42757 published?

CVE-2023-42757 was published on 2024-05-07 and last updated on 2026-06-17.

CVE-2023-42757

CVE-2023-42757 is a medium-severity vulnerability with a CVSS 3.x base score of 4.2. 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-120.

Key facts

Severity: Medium (CVSS 3.x base score 4.2)
EPSS exploit prediction: 0% (19th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2023-47189
Weakness: CWE-120
Published: 2024-05-07
Last modified: 2026-06-17

Description

Process Explorer before 17.04 allows attackers to make it functionally unavailable (a denial of service for analysis) by renaming an executable file to a new extensionless 255-character name and launching it with NtCreateUserProcess. This can occur through an issue in wcscat_s error handling.

Frequently asked questions

What is CVE-2023-42757?: Process Explorer before 17.04 allows attackers to make it functionally unavailable (a denial of service for analysis) by renaming an executable file to a new extensionless 255-character name and launching it with NtCreateUserProcess. This can occur through an issue in wcscat_s error handling.
How severe is CVE-2023-42757?: CVE-2023-42757 has a CVSS 3.x base score of 4.2, rated medium severity. It is exploitable over local access with low attack complexity, requires high privileges and user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2023-42757 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (19th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2023-42757?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2023-42757 have an EU (EUVD) identifier?: Yes. CVE-2023-42757 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2023-47189.
When was CVE-2023-42757 published?: CVE-2023-42757 was published on 2024-05-07 and last updated on 2026-06-17.

References

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