CVE-2019-1125

What it is

An information disclosure vulnerability exists when certain central processing units (CPU) speculatively access memory. An attacker who successfully exploited the vulnerability could read privileged data across trust boundaries. To exploit this vulnerability, an attacker would have to log on to an affected system and run a specially crafted application. The vulnerability would not allow an attacker to elevate user rights directly, but it could be used to obtain information that could be used to try to compromise the affected system further. On January 3, 2018, Microsoft released an advisory and security updates related to a newly-discovered class of hardware vulnerabilities (known as Spectre) involving speculative execution side channels that affect AMD, ARM, and Intel CPUs to varying degrees. This vulnerability, released on August 6, 2019, is a variant of the Spectre Variant 1 speculative execution side channel vulnerability and has been assigned CVE-2019-1125. Microsoft released a security update on July 9, 2019 that addresses the vulnerability through a software change that mitigates how the CPU speculatively accesses memory. Note that this vulnerability does not require a microcode update from your device OEM.

At a glance

Exploitability

Can be exploited locally on the machine with a low-privilege account. High risk of data exposure.

Exploit odds

4.5% chance of exploitation in the next 30 days (EPSS).

Fix

A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

1. 2019-09-03 18:15 UTC PublishedDisclosed publicly on CVE.org and NVD
2. 2026-06-17 02:27 UTC Last updatedMost recent change to the record

Why it ranks here

• Exploited in the wild: no, CISA does not list it.
• Exploit odds: 4.5% in the next 30 days (EPSS).
• Severity: 5.6 MEDIUM (CVSS).
• Fix: a patch or advisory is linked.

Details

Published

2019-09-03 18:15 UTC

Last modified

2026-06-17 02:27 UTC

Exploit probability

4.5% · EPSS, next 30 days

Record status

Modified

Affected

• Microsoft Windows 10
• Microsoft Windows 10 1607
• Microsoft Windows 10 1703
• Microsoft Windows 10 1709
• Microsoft Windows 10 1803
• Microsoft Windows 10 1809
• Microsoft Windows 10 1903
• Microsoft Windows 7

Attack profile CVSS 3.1 · 5.6

Attack vector

Local

Complexity

High

Privileges needed

Low

User interaction

None

Scope

Changed

Confidentiality

High

Integrity

None

Availability

None

Is it in your code?

Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.

Read https://cve-list.com/agent/cve/CVE-2019-1125.md and follow it. Check whether this project is affected by CVE-2019-1125. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.

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