How severe is CVE-2021-1800?

CVE-2021-1800 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2021-1800 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (46th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-1800?

CVE-2021-1800 affects Apple Xcode. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-1800?

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

When was CVE-2021-1800 published?

CVE-2021-1800 was published on 2021-04-02 and last updated on 2026-06-17.

CVE-2021-1800

CVE-2021-1800 is a medium-severity vulnerability in Apple Xcode with a CVSS 3.x base score of 5.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: Medium (CVSS 3.x base score 5.5)
CVSS v2: 4.3
EPSS exploit prediction: 1% (46th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Apple Xcode
Published: 2021-04-02
Last modified: 2026-06-17

Description

A path handling issue was addressed with improved validation. This issue is fixed in Xcode 12.4. A malicious application may be able to access arbitrary files on the host device while running an app that uses on-demand resources with Xcode.

Frequently asked questions

What is CVE-2021-1800?: A path handling issue was addressed with improved validation. This issue is fixed in Xcode 12.4. A malicious application may be able to access arbitrary files on the host device while running an app that uses on-demand resources with Xcode.
How severe is CVE-2021-1800?: CVE-2021-1800 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2021-1800 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (46th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-1800?: CVE-2021-1800 affects Apple Xcode. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-1800?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-1800 published?: CVE-2021-1800 was published on 2021-04-02 and last updated on 2026-06-17.

References

https://support.apple.com/en-us/HT212153

Affected products (1)

cpe:2.3:a:apple:xcode:*:*:*:*:*:*:*:*

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