How severe is CVE-2020-14360?

CVE-2020-14360 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-2020-14360 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (31st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-14360?

CVE-2020-14360 affects X.org X Server. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-14360?

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-2020-14360 published?

CVE-2020-14360 was published on 2021-01-20 and last updated on 2026-06-17.

CVE-2020-14360

CVE-2020-14360 is a high-severity vulnerability in X.org X Server 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-119.

Key facts

Severity: High (CVSS 3.x base score 7.8)
CVSS v2: 6.1
EPSS exploit prediction: 0% (31st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-119
Affected product: X.org X Server
Published: 2021-01-20
Last modified: 2026-06-17

Description

A flaw was found in the X.Org Server before version 1.20.10. An out-of-bounds access in the XkbSetMap function may lead to a privilege escalation vulnerability. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.

Frequently asked questions

What is CVE-2020-14360?: A flaw was found in the X.Org Server before version 1.20.10. An out-of-bounds access in the XkbSetMap function may lead to a privilege escalation vulnerability. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.
How severe is CVE-2020-14360?: CVE-2020-14360 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-2020-14360 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (31st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-14360?: CVE-2020-14360 affects X.org X Server. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-14360?: 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-2020-14360 published?: CVE-2020-14360 was published on 2021-01-20 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:x.org:x_server:*:*:*:*:*:*:*:*

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