CVE-2020-1458
CVE-2020-1458 is a high-severity vulnerability in Microsoft 365 Apps with a CVSS 3.x base score of 7.8. Its EPSS exploit-prediction score of 11% places it in the 95th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-426.
Key facts
- Severity: High (CVSS 3.x base score 7.8)
- CVSS v2: 9.3
- EPSS exploit prediction: 11% (95th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-426
- Affected product: Microsoft 365 Apps
- Published:
- Last modified:
Description
A remote code execution vulnerability exists when Microsoft Office improperly validates input before loading dynamic link library (DLL) files, aka 'Microsoft Office Remote Code Execution Vulnerability'.
Frequently asked questions
- What is CVE-2020-1458?
- A remote code execution vulnerability exists when Microsoft Office improperly validates input before loading dynamic link library (DLL) files, aka 'Microsoft Office Remote Code Execution Vulnerability'.
- How severe is CVE-2020-1458?
- CVE-2020-1458 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-2020-1458 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 11% (95th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2020-1458?
- CVE-2020-1458 affects Microsoft 365 Apps. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2020-1458?
- 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-2020-1458 published?
- CVE-2020-1458 was published on 2020-07-14 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:a:microsoft:365_apps:-:*:*:*:enterprise:*:*:*
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