How severe is CVE-2023-35619?

CVE-2023-35619 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability none.

Is CVE-2023-35619 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (64th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-35619?

CVE-2023-35619 affects Microsoft Office Long Term Servicing Channel. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-35619?

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

When was CVE-2023-35619 published?

CVE-2023-35619 was published on 2023-12-12 and last updated on 2026-06-17.

CVE-2023-35619

CVE-2023-35619 is a medium-severity vulnerability in Microsoft Office Long Term Servicing Channel 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-20.

Key facts

Severity: Medium (CVSS 3.x base score 5.3)
EPSS exploit prediction: 1% (64th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Microsoft Office Long Term Servicing Channel
Published: 2023-12-12
Last modified: 2026-06-17

Description

Microsoft Outlook for Mac Spoofing Vulnerability

Frequently asked questions

What is CVE-2023-35619?: Microsoft Outlook for Mac Spoofing Vulnerability
How severe is CVE-2023-35619?: CVE-2023-35619 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability none.
Is CVE-2023-35619 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (64th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-35619?: CVE-2023-35619 affects Microsoft Office Long Term Servicing Channel. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-35619?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2023-35619 published?: CVE-2023-35619 was published on 2023-12-12 and last updated on 2026-06-17.

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-35619

Affected products (1)

cpe:2.3:a:microsoft:office_long_term_servicing_channel:2021:*:*:*:*:macos:*:*

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