CVE-2011-4126

Name: CVE-2011-4126
Creator: NVD / NIST
Published: 2021-10-27T01:15:07.003+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.1/10EPSS 1.49%

Last modified Jun 16, 2026

CVE-2011-4126 is a high-severity vulnerability rated 8.1/10 on the CVSS scale. Race condition issues were found in Calibre at devices/linux_mount_helper.c allowing unprivileged users the ability to mount any device to anywhere.. EPSS estimates a 1.49% chance of exploitation in the next 30 days.

Description

Race condition issues were found in Calibre at devices/linux_mount_helper.c allowing unprivileged users the ability to mount any device to anywhere.

Metrics

CVSS 3.1

8.1/10

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

EPSS Probability

1.49%

70.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-367

Affected Software

Vendor	Product	Versions
Calibre-Ebook	Calibre	All versions

References

https://bugs.launchpad.net/calibre/+bug/885027Exploit, Issue Tracking, Third Party Advisory
https://git.zx2c4.com/calibre-mount-helper-exploit/about/Exploit, Third Party Advisory
https://lwn.net/Articles/464824/Not Applicable, Third Party Advisory
https://www.openwall.com/lists/oss-security/2011/11/02/2Mailing List, Third Party Advisory
https://bugs.launchpad.net/calibre/+bug/885027Exploit, Issue Tracking, Third Party Advisory
https://git.zx2c4.com/calibre-mount-helper-exploit/about/Exploit, Third Party Advisory
https://lwn.net/Articles/464824/Not Applicable, Third Party Advisory
https://www.openwall.com/lists/oss-security/2011/11/02/2Mailing List, Third Party Advisory

Timeline

Published: Oct 27, 2021
Last Modified: Jun 16, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2011-4126?

Race condition issues were found in Calibre at devices/linux_mount_helper.c allowing unprivileged users the ability to mount any device to anywhere.

How severe is CVE-2011-4126?

CVE-2011-4126 has a CVSS score of 8.1/10 (HIGH severity). The EPSS model estimates a 1.49% probability of exploitation in the next 30 days.

How do I fix CVE-2011-4126?

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-2011-4126?

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

Scan your code now

Source: NVD / NIST