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CVE-2020-1459

Windows ARM Information Disclosure Vulnerability

HIGH
7.5
CVSS Score
Published: August 17, 2020 at 07:13 PM UTC
Updated: June 17, 2026 at 03:01 AM UTC
5 products affected across 1 vendorWindows 10Windows 10 1809Windows 10 1909

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Severity
HIGH7.5
Exploit prediction
EPSS 4%

Description

An information disclosure vulnerability exists on ARM implementations that use speculative execution in control flow via a side-channel analysis, aka "straight-line speculation." To exploit this vulnerability, an attacker with local privileges would need to run a specially crafted application. The security update addresses the vulnerability by bypassing the speculative execution.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Windows 10· Microsoft
95%
1809190319092004
Windows 10 1809· Microsoft
60%
10.0.0 ≤ v < publication10.0.0
Affected range stops below publication, so it looks safe — our inference, not a vendor statement
Windows 10 1903· Microsoft
60%
10.0.0 ≤ v < publication10.0.0
Affected range stops below publication, so it looks safe — our inference, not a vendor statement
Windows 10 1909· Microsoft
60%
10.0.0 ≤ v < publication10.0.0
Affected range stops below publication, so it looks safe — our inference, not a vendor statement
Windows 10 2004· Microsoft
60%
10.0.0 ≤ v < publication10.0.0
Affected range stops below publication, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (1)

x_refsource_MISCPatchVendor Advisory
Source: [email protected]
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1459

CVSS

7.5HIGHmicrosoft
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-203

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