CVE-2020-1349
CVE-2020-1349 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 23% places it in the 97th percentile, indicating an elevated likelihood of exploitation.
Key facts
- Severity: High (CVSS 3.x base score 7.8)
- CVSS v2: 6.8
- EPSS exploit prediction: 23% (97th percentile)
- Actively exploited: Not listed in CISA KEV
- Affected product: Microsoft 365 Apps
- Published:
- Last modified:
Description
A remote code execution vulnerability exists in Microsoft Outlook software when it fails to properly handle objects in memory, aka 'Microsoft Outlook Remote Code Execution Vulnerability'.
Frequently asked questions
- What is CVE-2020-1349?
- A remote code execution vulnerability exists in Microsoft Outlook software when it fails to properly handle objects in memory, aka 'Microsoft Outlook Remote Code Execution Vulnerability'.
- How severe is CVE-2020-1349?
- CVE-2020-1349 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-2020-1349 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 23% (97th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2020-1349?
- CVE-2020-1349 primarily affects Microsoft 365 Apps. In total, 6 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
- How do I fix CVE-2020-1349?
- 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-2020-1349 published?
- CVE-2020-1349 was published on 2020-07-14 and last updated on 2026-06-17.
References
- http://packetstormsecurity.com/files/169959/Microsoft-Outlook-2019-16.0.12624.20424-Remote-Code-Execution.html
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1349
Affected products (6)
- cpe:2.3:a:microsoft:365_apps:-:*:*:*:enterprise:*:*:*
- cpe:2.3:a:microsoft:office:2019:*:*:*:*:-:*:*
- cpe:2.3:a:microsoft:outlook:2010:sp2:*:*:*:*:*:*
- cpe:2.3:a:microsoft:outlook:2013:sp1:*:*:*:*:*:*
- cpe:2.3:a:microsoft:outlook:2013:sp1:*:*:rt:*:*:*
- cpe:2.3:a:microsoft:outlook:2016:*:*:*:*:*:*:*
More vulnerabilities in Microsoft 365 Apps
- CVE-2024-21413 — Critical (CVSS 9.8): Microsoft Outlook Remote Code Execution Vulnerability
- CVE-2023-23397 — Critical (CVSS 9.8): Microsoft Outlook Elevation of Privilege Vulnerability
- CVE-2020-0901 — Critical (CVSS 9.8): A remote code execution vulnerability exists in Microsoft Excel software when the software fails to properly handle…
- CVE-2023-33150 — Critical (CVSS 9.6): Microsoft Office Security Feature Bypass Vulnerability
- CVE-2026-40420 — High (CVSS 8.8): Use after free in Microsoft Office allows an authorized attacker to elevate privileges locally.
- CVE-2026-35436 — High (CVSS 8.8): Use after free in Microsoft Office allows an authorized attacker to elevate privileges locally.