CVE-2019-11091

Name: CVE-2019-11091
Creator: NVD / NIST
Published: 2019-05-30T16:29:01.417+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.6/10EPSS 0.61%

Last modified Jun 17, 2026

CVE-2019-11091 is a medium-severity vulnerability rated 5.6/10 on the CVSS scale. Microarchitectural Data Sampling Uncacheable Memory (MDSUM): Uncacheable memory on some microprocessors utilizing speculative execution may allow an authenticated user to potentially enable information disclosure via a side channel with local access. A list of impacted products can be found here: https://www.intel.com/content/dam/www/public/us/en/documents/corporate-information/SA00233-microcode-update-guidance_05132019.pdf. EPSS estimates a 0.61% chance of exploitation in the next 30 days.

Description

Microarchitectural Data Sampling Uncacheable Memory (MDSUM): Uncacheable memory on some microprocessors utilizing speculative execution may allow an authenticated user to potentially enable information disclosure via a side channel with local access. A list of impacted products can be found here: https://www.intel.com/content/dam/www/public/us/en/documents/corporate-information/SA00233-microcode-update-guidance_05132019.pdf

Metrics

CVSS 3.1

5.6/10

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N

EPSS Probability

0.61%

44.7th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Vendor	Product	Versions
Intel	Microarchitectural Data Sampling Uncacheable Memory Firmware	All versions
Fedoraproject	Fedora	29

References

Timeline

Published: May 30, 2019
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2019-11091?

How severe is CVE-2019-11091?

CVE-2019-11091 has a CVSS score of 5.6/10 (MEDIUM severity). The EPSS model estimates a 0.61% probability of exploitation in the next 30 days.

How do I fix CVE-2019-11091?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2019-11091?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST