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CVE-2011-4105

13
FAUCET Score

CVE-2011-4105 describes a local privilege escalation vulnerability in LightDM versions prior to 1.0.6. An attacker can exploit this flaw by creating a symbolic link to ~/.Xauthority, allowing them to change ownership of arbitrary files. This vulnerability has a low severity CVSS score of 1.9, indicating a local attack vector, medium attack complexity, and a partial impact on integrity, with no impact on confidentiality or availability. There is no public exploit code available (Metasploit, Nuclei, ExploitDB), and it is not listed on the KEV catalog. Furthermore, there is no community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= 1.0.5CPE matchmatch criteria
cpe:2.3:a:robert_ancell:lightdm:*:*:*:*:*:*:*:*
0.0.1CPE matchmatch criteria
cpe:2.3:a:robert_ancell:lightdm:0.0.1:*:*:*:*:*:*:*
0.0.2CPE matchmatch criteria
cpe:2.3:a:robert_ancell:lightdm:0.0.2:*:*:*:*:*:*:*
0.0.3CPE matchmatch criteria
cpe:2.3:a:robert_ancell:lightdm:0.0.3:*:*:*:*:*:*:*
0.0.4CPE matchmatch criteria
cpe:2.3:a:robert_ancell:lightdm:0.0.4:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

1.9LOW

AV:L/AC:M/Au:N/C:N/I:P/A:N

Confidentiality Impact
NONE
Integrity Impact
PARTIAL
Availability Impact
NONE
Access Vector
LOCAL
Access Complexity
MEDIUM
Authentication
NONE
Exploitability Score
3.4
Impact Score
2.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
0.31%
Probability of exploitation in next 30 days
EPSS Percentile
23.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0031 is in the 29th percentile among its peer group of 747 CVEs.

Social Chatter

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

Media Mentions

No media coverage found for this CVE.

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

Remediation

Remediation records are not available for this CVE.

References

lists.freedesktop.org / archives/lightdm/2011-November/000178.html
openwall.com / lists/oss-security/2011/11/02/10
openwall.com / lists/oss-security/2011/11/02/6
openwall.com / lists/oss-security/2011/11/02/9
ubuntu.com / usn/USN-1262-1