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CVE-2011-4028

12
FAUCET Score

CVE-2011-4028 describes a local information disclosure vulnerability in the X.Org xserver, specifically affecting versions prior to 1.11.2. An attacker can exploit a symlink race condition in the LockServer function to determine the existence of arbitrary files on the system. This vulnerability has a low severity CVSS score of 1.2, indicating a local attack vector with high attack complexity and a potential impact limited to partial confidentiality. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= 1.11.1CPE matchmatch criteria
cpe:2.3:a:x.org:x_server:*:*:*:*:*:*:*:*
1.11.0CPE matchmatch criteria
cpe:2.3:a:x.org:x_server:1.11.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

1.2LOW

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

Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
NONE
Access Vector
LOCAL
Access Complexity
HIGH
Authentication
NONE
Exploitability Score
1.9
Impact Score
2.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
0.37%
Probability of exploitation in next 30 days
EPSS Percentile
29.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0037 is in the 66th 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

Patch Available

Vendor Patches (3)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: xorg-x11-server-0:1.1.1-48.90.el5
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: xorg-x11-server-0:1.10.6-1.el6
View patch
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 4Fixed in: xorg-x11

Vendor Advisories (1)

redhatCVE-2011-4028Low

xorg-x11-server: File existence disclosure vulnerability

Oct 18, 2011

References

cgit.freedesktop.org / xorg/xserver/commit
lists.freedesktop.org / archives/xorg/2011-October/053680.html
rhn.redhat.com / errata/RHSA-2012-0939.html
secunia.com / advisories/46460
Vendor Advisory
secunia.com / advisories/49579
Vendor Advisory