CVE-2011-4126

HIGHNVD 8.18.1—

8.1

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

CVSS v3: 8.1
EG Score: 8.1(medium)
EPSS: 65.6%
KEV: Not listed

Published

October 27, 2021

Last Modified

November 21, 2024

References (8)

secalert@redhathttps://bugs.launchpad.net/calibre/+bug/885027
secalert@redhathttps://git.zx2c4.com/calibre-mount-helper-exploit/about/
secalert@redhathttps://lwn.net/Articles/464824/
secalert@redhathttps://www.openwall.com/lists/oss-security/2011/11/02/2
af854a3a-2127-422b-91ae-364da2661108https://bugs.launchpad.net/calibre/+bug/885027
af854a3a-2127-422b-91ae-364da2661108https://git.zx2c4.com/calibre-mount-helper-exploit/about/
af854a3a-2127-422b-91ae-364da2661108https://lwn.net/Articles/464824/
af854a3a-2127-422b-91ae-364da2661108https://www.openwall.com/lists/oss-security/2011/11/02/2

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

CWE-367Time-of-check Time-of-use (TOCTOU) Race Condition

Data Freshness Timeline

(refreshed 9× in last 7d / 9× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-05-27 13:38 UTCepss_batch
2026-05-27 13:38 UTCepss_batch
2026-05-26 13:41 UTCepss_batch
2026-05-26 13:41 UTCepss_batch
2026-05-26 08:26 UTCEG score recompute
2026-05-26 08:26 UTCGHSA enrichment
2026-05-26 07:16 UTCepss_batch
2026-05-26 07:16 UTCepss_batch
2026-05-24 16:43 UTCepss_batch

Frequently asked(5)

What is CVE-2011-4126?

CVE-2011-4126 is a high vulnerability published on October 27, 2021. Race condition issues were found in Calibre at devices/linuxmounthelper.c allowing unprivileged users the ability to mount any device to anywhere.

When was CVE-2011-4126 disclosed?

CVE-2011-4126 was first published in the National Vulnerability Database on October 27, 2021, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2011-4126 actively exploited?

CVE-2011-4126 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 65.6% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2011-4126?

CVE-2011-4126 has a CVSS v3 base score of 8.1 (NVD).

How do I remediate CVE-2011-4126?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2011-4126, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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CVE-2011-4126

📅 Published

🔄 Last Modified

🔗 References (8)