CVE-2020-0647
CVE-2020-0647 is a medium-severity vulnerability in Microsoft Office Online Server with a CVSS 3.x base score of 5.4. 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-346.
Key facts
- Severity: Medium (CVSS 3.x base score 5.4)
- CVSS v2: 5.8
- EPSS exploit prediction: 1% (56th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-346
- Affected product: Microsoft Office Online Server
- Published:
- Last modified:
Description
A spoofing vulnerability exists when Office Online does not validate origin in cross-origin communications correctly, aka 'Microsoft Office Online Spoofing Vulnerability'.
Frequently asked questions
- What is CVE-2020-0647?
- A spoofing vulnerability exists when Office Online does not validate origin in cross-origin communications correctly, aka 'Microsoft Office Online Spoofing Vulnerability'.
- How severe is CVE-2020-0647?
- CVE-2020-0647 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
- Is CVE-2020-0647 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (56th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2020-0647?
- CVE-2020-0647 affects Microsoft Office Online Server. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2020-0647?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- When was CVE-2020-0647 published?
- CVE-2020-0647 was published on 2020-01-14 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:a:microsoft:office_online_server:-:*:*:*:*:*:*:*
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