How severe is CVE-2023-35373?

CVE-2023-35373 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with high attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2023-35373 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (49th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-35373?

CVE-2023-35373 affects Microsoft Mono. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-35373?

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

When was CVE-2023-35373 published?

CVE-2023-35373 was published on 2023-07-11 and last updated on 2026-06-17.

CVE-2023-35373

CVE-2023-35373 is a medium-severity vulnerability in Microsoft Mono with a CVSS 3.x base score of 5.3. 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-347.

Key facts

Severity: Medium (CVSS 3.x base score 5.3)
EPSS exploit prediction: 1% (49th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-347
Affected product: Microsoft Mono
Published: 2023-07-11
Last modified: 2026-06-17

Description

Mono Authenticode Validation Spoofing Vulnerability

Frequently asked questions

What is CVE-2023-35373?: Mono Authenticode Validation Spoofing Vulnerability
How severe is CVE-2023-35373?: CVE-2023-35373 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with high attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2023-35373 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (49th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-35373?: CVE-2023-35373 affects Microsoft Mono. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-35373?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2023-35373 published?: CVE-2023-35373 was published on 2023-07-11 and last updated on 2026-06-17.

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-35373

Affected products (1)

cpe:2.3:a:microsoft:mono:*:*:*:*:*:*:*:*

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