CVE-2020-11740

Name: CVE-2020-11740
Creator: NVD / NIST
Published: 2020-04-14T13:15:12.767+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.5/10EPSS 0.43%

Last modified Jun 17, 2026

CVE-2020-11740 is a medium-severity vulnerability rated 5.5/10 on the CVSS scale. An issue was discovered in xenoprof in Xen through 4.13.x, allowing guest OS users (without active profiling) to obtain sensitive information about other guests. Unprivileged guests can request to map xenoprof buffers, even if profiling has not been enabled for those guests. EPSS estimates a 0.43% chance of exploitation in the next 30 days.

Description

An issue was discovered in xenoprof in Xen through 4.13.x, allowing guest OS users (without active profiling) to obtain sensitive information about other guests. Unprivileged guests can request to map xenoprof buffers, even if profiling has not been enabled for those guests. These buffers were not scrubbed.

Metrics

CVSS 3.1

5.5/10

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

EPSS Probability

0.43%

34.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-212

Affected Software

Vendor	Product	Versions	Update
Xen	Xen	>= 3.2.0, <= 4.13.0	—
Xen	Xen	4.13.0	Rc1
Debian	Debian Linux	10.0	—
Fedoraproject	Fedora	30	—
Fedoraproject	Fedora	31	—
Fedoraproject	Fedora	32	—
Opensuse	Leap	15.1	—

References

http://lists.opensuse.org/opensuse-security-announce/2020-05/msg00006.htmlMailing List, Third Party Advisory
http://www.openwall.com/lists/oss-security/2020/04/14/1Mailing List, Patch, Third Party Advisory
http://xenbits.xen.org/xsa/advisory-313.htmlPatch, Vendor Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5M2XRNCHOGGTJQBZQJ7DCV6ZNAKN3LE2/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NVTP4OYHCTRU3ONFJOFJQVNDFB25KLLG/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YMAW7D2MP6RE4BFI5BZWOBBWGY3VSOFN/
https://security.gentoo.org/glsa/202005-08Third Party Advisory
https://www.debian.org/security/2020/dsa-4723Third Party Advisory
https://xenbits.xen.org/xsa/advisory-313.htmlPatch, Vendor Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-05/msg00006.htmlMailing List, Third Party Advisory
http://www.openwall.com/lists/oss-security/2020/04/14/1Mailing List, Patch, Third Party Advisory
http://xenbits.xen.org/xsa/advisory-313.htmlPatch, Vendor Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5M2XRNCHOGGTJQBZQJ7DCV6ZNAKN3LE2/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NVTP4OYHCTRU3ONFJOFJQVNDFB25KLLG/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YMAW7D2MP6RE4BFI5BZWOBBWGY3VSOFN/
https://security.gentoo.org/glsa/202005-08Third Party Advisory
https://www.debian.org/security/2020/dsa-4723Third Party Advisory
https://xenbits.xen.org/xsa/advisory-313.htmlPatch, Vendor Advisory

Timeline

Published: Apr 14, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-11740?

How severe is CVE-2020-11740?

CVE-2020-11740 has a CVSS score of 5.5/10 (MEDIUM severity). The EPSS model estimates a 0.43% probability of exploitation in the next 30 days.

How do I fix CVE-2020-11740?

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-2020-11740?

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

Scan your code now

Source: NVD / NIST