How severe is CVE-2022-35742?

CVE-2022-35742 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2022-35742 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 22% (97th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2022-35742?

CVE-2022-35742 primarily affects Microsoft 365 Apps. In total, 6 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2022-35742?

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-2022-35742 published?

CVE-2022-35742 was published on 2023-06-01 and last updated on 2026-06-17.

CVE-2022-35742

CVE-2022-35742 is a high-severity vulnerability in Microsoft 365 Apps with a CVSS 3.x base score of 7.5. Its EPSS exploit-prediction score of 22% places it in the 97th percentile, indicating an elevated likelihood of exploitation.

Key facts

Severity: High (CVSS 3.x base score 7.5)
EPSS exploit prediction: 22% (97th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Microsoft 365 Apps
Published: 2023-06-01
Last modified: 2026-06-17

Description

Microsoft Outlook Denial of Service Vulnerability

Frequently asked questions

What is CVE-2022-35742?: Microsoft Outlook Denial of Service Vulnerability
How severe is CVE-2022-35742?: CVE-2022-35742 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2022-35742 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 22% (97th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2022-35742?: CVE-2022-35742 primarily affects Microsoft 365 Apps. In total, 6 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2022-35742?: 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-2022-35742 published?: CVE-2022-35742 was published on 2023-06-01 and last updated on 2026-06-17.

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2022-35742

Affected products (6)

cpe:2.3:a:microsoft:365_apps:-:*:*:*:enterprise:*:*:*
cpe:2.3:a:microsoft:office:2019:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:office_long_term_servicing_channel:2021:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:outlook:2013:sp1:*:*:-:*:*:*
cpe:2.3:a:microsoft:outlook:2013:sp1:*:*:rt:*:*:*
cpe:2.3:a:microsoft:outlook:2016:*:*:*:*:*:*:*

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