How severe is CVE-2011-4613?

CVE-2011-4613 has a CVSS 2.0 base score of 4.6, rated medium severity.

Is CVE-2011-4613 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (54th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2011-4613?

CVE-2011-4613 primarily affects X.org X Server. In total, 7 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2011-4613?

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

When was CVE-2011-4613 published?

CVE-2011-4613 was published on 2014-02-05 and last updated on 2026-06-16.

CVE-2011-4613

CVE-2011-4613 is a medium-severity vulnerability in X.org X Server with a CVSS 2.0 base score of 4.6. 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: Medium (CVSS 2.0 base score 4.6)
EPSS exploit prediction: 1% (54th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-264
Affected product: X.org X Server
Published: 2014-02-05
Last modified: 2026-06-16

Description

The X.Org X wrapper (xserver-wrapper.c) in Debian GNU/Linux and Ubuntu Linux does not properly verify the TTY of a user who is starting X, which allows local users to bypass intended access restrictions by associating stdin with a file that is misinterpreted as the console TTY.

Frequently asked questions

What is CVE-2011-4613?: The X.Org X wrapper (xserver-wrapper.c) in Debian GNU/Linux and Ubuntu Linux does not properly verify the TTY of a user who is starting X, which allows local users to bypass intended access restrictions by associating stdin with a file that is misinterpreted as the console TTY.
How severe is CVE-2011-4613?: CVE-2011-4613 has a CVSS 2.0 base score of 4.6, rated medium severity.
Is CVE-2011-4613 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (54th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2011-4613?: CVE-2011-4613 primarily affects X.org X Server. In total, 7 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2011-4613?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2011-4613 published?: CVE-2011-4613 was published on 2014-02-05 and last updated on 2026-06-16.

References

Affected products (7)

cpe:2.3:a:x.org:x_server:-:*:*:*:*:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:10.04:-:lts:*:*:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:10.10:*:*:*:*:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:11.04:*:*:*:*:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:11.10:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:*:*:*:*:*:*:*:*
cpe:2.3:o:ubuntu:linux:*:*:*:*:*:*:*:*

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