How severe is CVE-2022-30159?

CVE-2022-30159 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2022-30159 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (83rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2022-30159?

CVE-2022-30159 primarily affects Microsoft Office Online Server. In total, 6 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2022-30159?

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

When was CVE-2022-30159 published?

CVE-2022-30159 was published on 2022-06-15 and last updated on 2026-06-17.

CVE-2022-30159

CVE-2022-30159 is a medium-severity vulnerability in Microsoft Office Online Server with a CVSS 3.x base score of 5.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: Medium (CVSS 3.x base score 5.5)
CVSS v2: 4.3
EPSS exploit prediction: 3% (83rd percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Microsoft Office Online Server
Published: 2022-06-15
Last modified: 2026-06-17

Description

Microsoft Office Information Disclosure Vulnerability

Frequently asked questions

What is CVE-2022-30159?: Microsoft Office Information Disclosure Vulnerability
How severe is CVE-2022-30159?: CVE-2022-30159 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2022-30159 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (83rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2022-30159?: CVE-2022-30159 primarily affects Microsoft Office Online Server. In total, 6 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2022-30159?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2022-30159 published?: CVE-2022-30159 was published on 2022-06-15 and last updated on 2026-06-17.

References

Affected products (6)

cpe:2.3:a:microsoft:office_online_server:-:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:office_web_apps_server:2013:sp1:*:*:*:*:*:*
cpe:2.3:a:microsoft:sharepoint_server:-:*:*:*:subscription:*:*:*
cpe:2.3:a:microsoft:sharepoint_server:2013:sp1:*:*:enterprise:*:*:*
cpe:2.3:a:microsoft:sharepoint_server:2016:*:*:*:enterprise:*:*:*
cpe:2.3:a:microsoft:sharepoint_server:2019:*:*:*:*:*:*:*

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