How severe is CVE-2023-29343?

CVE-2023-29343 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2023-29343 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (75th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-29343?

CVE-2023-29343 affects Microsoft Windows Sysmon. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-29343?

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-2023-29343 published?

CVE-2023-29343 was published on 2023-05-09 and last updated on 2026-06-17.

CVE-2023-29343

CVE-2023-29343 is a high-severity vulnerability in Microsoft Windows Sysmon 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-59.

Key facts

Severity: High (CVSS 3.x base score 7.8)
EPSS exploit prediction: 2% (75th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-59
Affected product: Microsoft Windows Sysmon
Published: 2023-05-09
Last modified: 2026-06-17

Description

SysInternals Sysmon for Windows Elevation of Privilege Vulnerability

Frequently asked questions

What is CVE-2023-29343?: SysInternals Sysmon for Windows Elevation of Privilege Vulnerability
How severe is CVE-2023-29343?: CVE-2023-29343 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2023-29343 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (75th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-29343?: CVE-2023-29343 affects Microsoft Windows Sysmon. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-29343?: 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-2023-29343 published?: CVE-2023-29343 was published on 2023-05-09 and last updated on 2026-06-17.

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-29343

Affected products (1)

cpe:2.3:a:microsoft:windows_sysmon:*:*:*:*:*:*:*:*

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