Buffer overflow in Microsoft Windows
CVE-2020-1020
A remote code execution vulnerability exists in Microsoft Windows when the Windows Adobe Type Manager Library improperly handles a specially-crafted multi-master font - Adobe Type 1 PostScript format.For all systems except Windows 10, an attacker who successfully exploited the vulnerability could execute code remotely, aka 'Adobe Font Manager Library Remote Code Execution Vulnerability'. This CVE ID is unique from CVE-2020-0938.
Vulnerability class: Buffer Overflow
EPSS: 0.650 (99.2th percentile) — read the EPSS interpretation.
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.
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_1507
- Microsoft Windows_10_1607
- Microsoft Windows_10_1709
- Microsoft Windows_10_1803
- Microsoft Windows_10_1809
- Microsoft Windows_10_1903
- Microsoft Windows_10_1909
- Microsoft Windows 10 Version 1903 For 32-bit Systems — versions unspecified
- Microsoft Windows 10 Version 1903 For Arm64-based Systems — versions unspecified
Weakness classification (CWE)
CISA KEV (Known Exploited Vulnerabilities)
This CVE is on the CISA KEV catalog, added on . CISA KEV inclusion means CISA has confirmed in-the-wild exploitation; US federal agencies are required to remediate within a published due date.
BOD 22-01 due date: .
Required action: Apply updates per vendor instructions.
Public proof-of-concept exploits
References
- secure@microsoft.com (Patch, x_refsource_MISC, Vendor Advisory)
- 134c704f-9b21-4f2e-91b3-4a467353bcc0 (US Government Resource)
Frequently asked questions
- What is CVE-2020-1020?
- CVE-2020-1020 is a high-severity vulnerability in Microsoft Windows, classified under Out-of-bounds Write. CVSS score: 8.8/10. Published 2020-04-15.
- How severe is CVE-2020-1020?
- High severity. CVSS v3 base score is 8.8 out of 10.
- Is CVE-2020-1020 known to be exploited?
- Yes. CVE-2020-1020 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2021-11-03), indicating it is being actively exploited. 10 public proof-of-concept repositories are indexed.