How severe is CVE-2015-8316?

CVE-2015-8316 has a CVSS 3.x base score of 5.9, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2015-8316 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (75th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2015-8316?

CVE-2015-8316 primarily affects Lightdm Project Lightdm. In total, 6 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2015-8316?

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

When was CVE-2015-8316 published?

CVE-2015-8316 was published on 2017-09-06 and last updated on 2026-06-17.

CVE-2015-8316

CVE-2015-8316 is a medium-severity vulnerability in Lightdm Project Lightdm with a CVSS 3.x base score of 5.9. 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-129.

Key facts

Severity: Medium (CVSS 3.x base score 5.9)
CVSS v2: 4.3
EPSS exploit prediction: 2% (75th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-129
Affected product: Lightdm Project Lightdm
Published: 2017-09-06
Last modified: 2026-06-17

Description

Array index error in LightDM (aka Light Display Manager) 1.14.3, 1.16.x before 1.16.6 when the XDMCP server is enabled allows remote attackers to cause a denial of service (process crash) via an XDMCP request packet with no address.

Frequently asked questions

What is CVE-2015-8316?: Array index error in LightDM (aka Light Display Manager) 1.14.3, 1.16.x before 1.16.6 when the XDMCP server is enabled allows remote attackers to cause a denial of service (process crash) via an XDMCP request packet with no address.
How severe is CVE-2015-8316?: CVE-2015-8316 has a CVSS 3.x base score of 5.9, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2015-8316 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (75th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2015-8316?: CVE-2015-8316 primarily affects Lightdm Project Lightdm. In total, 6 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2015-8316?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2015-8316 published?: CVE-2015-8316 was published on 2017-09-06 and last updated on 2026-06-17.

References

Affected products (6)

cpe:2.3:a:lightdm_project:lightdm:1.14.3:*:*:*:*:*:*:*
cpe:2.3:a:lightdm_project:lightdm:1.16:*:*:*:*:*:*:*
cpe:2.3:a:lightdm_project:lightdm:1.16.1:*:*:*:*:*:*:*
cpe:2.3:a:lightdm_project:lightdm:1.16.2:*:*:*:*:*:*:*
cpe:2.3:a:lightdm_project:lightdm:1.16.3:*:*:*:*:*:*:*
cpe:2.3:a:lightdm_project:lightdm:1.16.4:*:*:*:*:*:*:*

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