How severe is CVE-2022-33648?

CVE-2022-33648 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2022-33648 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (51st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2022-33648?

CVE-2022-33648 affects Microsoft Office Online Server. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2022-33648?

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-2022-33648 published?

CVE-2022-33648 was published on 2022-08-09 and last updated on 2026-06-17.

CVE-2022-33648

CVE-2022-33648 is a high-severity vulnerability in Microsoft Office Online Server 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.

Key facts

Severity: High (CVSS 3.x base score 7.8)
EPSS exploit prediction: 1% (51st percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Microsoft Office Online Server
Published: 2022-08-09
Last modified: 2026-06-17

Description

Microsoft Excel Remote Code Execution Vulnerability

Frequently asked questions

What is CVE-2022-33648?: Microsoft Excel Remote Code Execution Vulnerability
How severe is CVE-2022-33648?: CVE-2022-33648 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2022-33648 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (51st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2022-33648?: CVE-2022-33648 affects Microsoft Office Online Server. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2022-33648?: 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-2022-33648 published?: CVE-2022-33648 was published on 2022-08-09 and last updated on 2026-06-17.

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2022-33648

Affected products (1)

cpe:2.3:a:microsoft:office_online_server:-:*:*:*:*:*:*:*

More vulnerabilities in Microsoft Office Online Server

CVE-2023-21716 — Critical (CVSS 9.8): Microsoft Word Remote Code Execution Vulnerability
CVE-2019-1205 — Critical (CVSS 9.8): A remote code execution vulnerability exists in Microsoft Word software when it fails to properly handle objects in…
CVE-2022-41106 — High (CVSS 8.8): Microsoft Excel Remote Code Execution Vulnerability
CVE-2022-21840 — High (CVSS 8.8): Microsoft Office Remote Code Execution Vulnerability
CVE-2020-1583 — High (CVSS 8.8): An information disclosure vulnerability exists when Microsoft Word improperly discloses the contents of its memory. An…
CVE-2020-1495 — High (CVSS 8.8): A remote code execution vulnerability exists in Microsoft Excel software when the software fails to properly handle…

All CVEs affecting Microsoft Office Online Server →