How severe is CVE-2011-0542?

CVE-2011-0542 has a CVSS 2.0 base score of 3.3, rated low severity.

Is CVE-2011-0542 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (24th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2011-0542?

CVE-2011-0542 primarily affects Fuse. In total, 33 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2011-0542?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2011-0542 published?

CVE-2011-0542 was published on 2011-09-02 and last updated on 2026-06-16.

CVE-2011-0542

CVE-2011-0542 is a low-severity vulnerability in Fuse with a CVSS 2.0 base score of 3.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-264.

Key facts

Severity: Low (CVSS 2.0 base score 3.3)
EPSS exploit prediction: 0% (24th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-264
Affected product: Fuse
Published: 2011-09-02
Last modified: 2026-06-16

Description

fusermount in fuse 2.8.5 and earlier does not perform a chdir to / before performing a mount or umount, which allows local users to unmount arbitrary directories via unspecified vectors.

Frequently asked questions

What is CVE-2011-0542?: fusermount in fuse 2.8.5 and earlier does not perform a chdir to / before performing a mount or umount, which allows local users to unmount arbitrary directories via unspecified vectors.
How severe is CVE-2011-0542?: CVE-2011-0542 has a CVSS 2.0 base score of 3.3, rated low severity.
Is CVE-2011-0542 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (24th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2011-0542?: CVE-2011-0542 primarily affects Fuse. In total, 33 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2011-0542?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2011-0542 published?: CVE-2011-0542 was published on 2011-09-02 and last updated on 2026-06-16.

References

Affected products (33)

cpe:2.3:a:fuse:fuse:*:*:*:*:*:*:*:*
cpe:2.3:a:fuse:fuse:1.9:*:*:*:*:*:*:*
cpe:2.3:a:fuse:fuse:2.0:pre0:*:*:*:*:*:*
cpe:2.3:a:fuse:fuse:2.0:pre1:*:*:*:*:*:*
cpe:2.3:a:fuse:fuse:2.1:*:*:*:*:*:*:*
cpe:2.3:a:fuse:fuse:2.2:*:*:*:*:*:*:*
cpe:2.3:a:fuse:fuse:2.2.1:*:*:*:*:*:*:*
cpe:2.3:a:fuse:fuse:2.3:pre:*:*:*:*:*:*
cpe:2.3:a:fuse:fuse:2.3:rc1:*:*:*:*:*:*
cpe:2.3:a:fuse:fuse:2.3.0:*:*:*:*:*:*:*
cpe:2.3:a:fuse:fuse:2.4.0:*:*:*:*:*:*:*
cpe:2.3:a:fuse:fuse:2.4.1:*:*:*:*:*:*:*
cpe:2.3:a:fuse:fuse:2.4.2:*:*:*:*:*:*:*
cpe:2.3:a:fuse:fuse:2.5.0:*:*:*:*:*:*:*
cpe:2.3:a:fuse:fuse:2.5.1:*:*:*:*:*:*:*
cpe:2.3:a:fuse:fuse:2.5.2:*:*:*:*:*:*:*
cpe:2.3:a:fuse:fuse:2.5.3:*:*:*:*:*:*:*
cpe:2.3:a:fuse:fuse:2.6.0:*:*:*:*:*:*:*
cpe:2.3:a:fuse:fuse:2.6.1:*:*:*:*:*:*:*
cpe:2.3:a:fuse:fuse:2.6.3:*:*:*:*:*:*:*
cpe:2.3:a:fuse:fuse:2.6.5:*:*:*:*:*:*:*
cpe:2.3:a:fuse:fuse:2.7.0:*:*:*:*:*:*:*
cpe:2.3:a:fuse:fuse:2.7.1:*:*:*:*:*:*:*
cpe:2.3:a:fuse:fuse:2.7.2:*:*:*:*:*:*:*
cpe:2.3:a:fuse:fuse:2.7.3:*:*:*:*:*:*:*
cpe:2.3:a:fuse:fuse:2.7.4:*:*:*:*:*:*:*
cpe:2.3:a:fuse:fuse:2.7.5:*:*:*:*:*:*:*
cpe:2.3:a:fuse:fuse:2.7.6:*:*:*:*:*:*:*
cpe:2.3:a:fuse:fuse:2.8.0:*:*:*:*:*:*:*
cpe:2.3:a:fuse:fuse:2.8.1:*:*:*:*:*:*:*
cpe:2.3:a:fuse:fuse:2.8.2:*:*:*:*:*:*:*
cpe:2.3:a:fuse:fuse:2.8.3:*:*:*:*:*:*:*
cpe:2.3:a:fuse:fuse:2.8.4:*:*:*:*:*:*:*

More vulnerabilities in Fuse

CVE-2011-0543 — Low (CVSS 3.3): Certain legacy functionality in fusermount in fuse 2.8.5 and earlier, when util-linux does not support the…
CVE-2011-0541 — Low (CVSS 3.3): fuse 2.8.5 and earlier does not properly handle when /etc/mtab cannot be updated, which allows local users to unmount…
CVE-2010-0789 — Low (CVSS 3.3): fusermount in FUSE before 2.7.5, and 2.8.x before 2.8.2, allows local users to unmount an arbitrary FUSE filesystem…
CVE-2005-1858 — Low (CVSS 2.1): FUSE 2.x before 2.3.0 does not properly clear previously used memory from unfilled pages when the filesystem returns a…

All CVEs affecting Fuse →

Other CWE-264 (Permissions, Privileges, and Access Controls) vulnerabilities

CVE-2016-8363 — Critical (CVSS 10.0): An issue was discovered in Moxa OnCell OnCellG3470A-LTE, AWK-1131A/3131A/4131A Series, AWK-3191 Series, AWK-5232/6232…
CVE-2016-7457 — Critical (CVSS 10.0): VMware vRealize Operations (aka vROps) 6.x before 6.4.0 allows remote authenticated users to gain privileges, or halt…
CVE-2015-7425 — Critical (CVSS 10.0): The Data Protection component in the VMware vSphere GUI in IBM Tivoli Storage Manager for Virtual Environments: Data…
CVE-2015-8267 — Critical (CVSS 10.0): The PasswordReset.Controllers.ResetController.ChangePasswordIndex method in PasswordReset.dll in Dovestones AD Self…
CVE-2015-7919 — Critical (CVSS 10.0): SearchBlox 8.3 before 8.3.1 allows remote attackers to write to the config file, and consequently cause a denial of…
CVE-2015-7071 — Critical (CVSS 10.0): The File Bookmark component in Apple OS X before 10.11.2 allows attackers to bypass a sandbox protection mechanism for…

Browse all CWE-264 (Permissions, Privileges, and Access Controls) vulnerabilities →