Buffer overflow in Microsoft Windows
CVE-2020-1436
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'.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.213 (97.6th percentile), scored .
Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 98th percentile — 97.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.213 · newest: 0.213 · change: 0.000
Affected products
- Microsoft Windows — versions 10 Version 1803 for 32-bit Systems, 10 Version 1803 for x64-based Systems, 10 Version 1803 for ARM64-based Systems
- Microsoft Windows 10 — versions 1607, 1709, 1803
- Microsoft Windows 10 Version 1903 For 32-Bit Systems — versions unspecified
- Microsoft Windows 10 Version 1903 For Arm64-Based Systems — versions unspecified
- Microsoft Windows 10 Version 1903 For X64-Based Systems — versions unspecified
- Microsoft Windows 10 Version 1909 For 32-Bit Systems — versions unspecified
- Microsoft Windows 10 Version 1909 For Arm64-Based Systems — versions unspecified
- Microsoft Windows 10 Version 1909 For X64-Based Systems — versions unspecified
- Microsoft Windows 10 Version 2004 For 32-Bit Systems — versions unspecified
- Microsoft Windows 10 Version 2004 For Arm64-Based Systems — versions unspecified
Weakness classification (CWE)
References
- portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1436 (Patch, Vendor Advisory)
- www.zerodayinitiative.com/advisories/ZDI-20-877/ (VDB Entry, Third Party Advisory)
- www.openwall.com/lists/oss-security/2020/08/25/3 (mailing-list, Mailing List, Third Party Advisory)
- www.openwall.com/lists/oss-security/2020/08/25/5 (mailing-list, Mailing List, Third Party Advisory)
Frequently asked questions
- What is CVE-2020-1436?
- CVE-2020-1436 is a high-severity vulnerability in Microsoft Windows, classified under Out-of-bounds Write. CVSS score: 8.8/10. Published 2020-07-14.
- How severe is CVE-2020-1436?
- High severity. CVSS v3 base score is 8.8 out of 10.