How severe is CVE-2011-3349?

CVE-2011-3349 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2011-3349 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (28th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2011-3349?

CVE-2011-3349 affects Lightdm Project Lightdm. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2011-3349?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2011-3349 published?

CVE-2011-3349 was published on 2019-11-19 and last updated on 2026-06-16.

CVE-2011-3349

CVE-2011-3349 is a high-severity vulnerability in Lightdm Project Lightdm with a CVSS 3.x base score of 7.8. 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-269.

Key facts

Severity: High (CVSS 3.x base score 7.8)
CVSS v2: 7.2
EPSS exploit prediction: 0% (28th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-269
Affected product: Lightdm Project Lightdm
Published: 2019-11-19
Last modified: 2026-06-16

Description

lightdm before 0.9.6 writes in .dmrc and Xauthority files using root permissions while the files are in user controlled folders. A local user can overwrite root-owned files via a symlink, which can allow possible privilege escalation.

Frequently asked questions

What is CVE-2011-3349?: lightdm before 0.9.6 writes in .dmrc and Xauthority files using root permissions while the files are in user controlled folders. A local user can overwrite root-owned files via a symlink, which can allow possible privilege escalation.
How severe is CVE-2011-3349?: CVE-2011-3349 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2011-3349 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (28th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2011-3349?: CVE-2011-3349 affects Lightdm Project Lightdm. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2011-3349?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2011-3349 published?: CVE-2011-3349 was published on 2019-11-19 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:a:lightdm_project:lightdm:*:*:*:*:*:*:*:*

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