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CVE-2011-4126

26
FAUCET Score

CVE-2011-4126 describes a race condition in Calibre's devices/linux_mount_helper.c, allowing unprivileged users to mount any device to an arbitrary location. This vulnerability carries a high CVSS score of 8.1, indicating a severe risk with high impact on confidentiality, integrity, and availability, despite requiring high attack complexity. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this decade-old flaw.

Impacted Technologies

VendorProductVersion(s)CPE
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:a:calibre-ebook:calibre:-:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

8.1HIGH

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

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.2
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.49%
Probability of exploitation in next 30 days
EPSS Percentile
71.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0149 is in the 29th percentile among its peer group of 8,918 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

bugs.launchpad.net / calibre/+bug/885027
ExploitIssue TrackingThird Party Advisory
git.zx2c4.com / calibre-mount-helper-exploit/about
ExploitThird Party Advisory
lwn.net / Articles/464824
Not ApplicableThird Party Advisory
openwall.com / lists/oss-security/2011/11/02/2
Mailing ListThird Party Advisory