CVE-2020-1436 in the critical feed json
A remote code execution vulnerability exists when the Windows font library improperly handles specially crafted fonts.For all systems excep…
published 2020-07-14 6 y ago modified 2026-06-17 4 mo ago also EUVD-2020-12312
- cvss
- 8.8
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 21.3%
- EPSS 21.3% chance of exploitation in 30 days, percentile 97%
- public exploits
- 0
- none known
Summary
A remote code execution vulnerability exists when the Windows font library improperly handles specially crafted fonts.For all systems except Windows 10, an attacker who successfully exploited the vulnerability could execute code remotely, aka 'Windows Font Library Remote Code Execution Vulnerability'.
Patch / fix
Exploit prediction
21.28% chance of exploitation in the next 30 days, higher than 97% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 8.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 6.8 | AV:N/AC:M/Au:N/C:P/I:P/A:P |
Affected products
- Microsoft Windows 10 Version 2004 for 32-bit Systems
- Microsoft Windows 10 Version 2004 for ARM64-based Systems
- Microsoft Windows 10 Version 2004 for x64-based Systems
- Microsoft Windows Server, version 2004 (Server Core installation)
- Microsoft Windows
- Microsoft Windows Server
- Microsoft Windows 10 Version 1909 for 32-bit Systems
- Microsoft Windows 10 Version 1909 for x64-based Systems
- Microsoft Windows 10 Version 1909 for ARM64-based Systems
- Microsoft Windows Server, version 1909 (Server Core installation)
- Microsoft Windows 10 Version 1903 for 32-bit Systems
- Microsoft Windows 10 Version 1903 for x64-based Systems
- Microsoft Windows 10 Version 1903 for ARM64-based Systems
- Microsoft Windows Server, version 1903 (Server Core installation)
Classification
- Weakness
-
- CWE-787 Out-of-bounds Write
References
-
portal.msrc.microsoft.com
/en-US/security-guidance/advisory/CVE-2020-1436
patch, vendor-advisory
-
zerodayinitiative.com
/advisories/ZDI-20-877/
third-party-advisory, vdb-entry
-
openwall.com
/lists/oss-security/2020/08/25/3
mailing-list, third-party-advisory
-
openwall.com
/lists/oss-security/2020/08/25/5
mailing-list, third-party-advisory
Sources
- CVE List CVE-2020-1436
- NVD CVE-2020-1436
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