How severe is CVE-2021-30999?

CVE-2021-30999 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability none.

Is CVE-2021-30999 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (42nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-30999?

CVE-2021-30999 primarily affects Apple Ipados. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2021-30999?

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

When was CVE-2021-30999 published?

CVE-2021-30999 was published on 2021-08-24 and last updated on 2026-06-17.

CVE-2021-30999

CVE-2021-30999 is a medium-severity vulnerability in Apple Ipados with a CVSS 3.x base score of 4.3. 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-276.

Key facts

Severity: Medium (CVSS 3.x base score 4.3)
CVSS v2: 4.0
EPSS exploit prediction: 1% (42nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-276
Affected product: Apple Ipados
Published: 2021-08-24
Last modified: 2026-06-17

Description

The issue was addressed with improved permissions logic. This issue is fixed in iOS 14.6 and iPadOS 14.6. A user may be unable to fully delete browsing history.

Frequently asked questions

What is CVE-2021-30999?: The issue was addressed with improved permissions logic. This issue is fixed in iOS 14.6 and iPadOS 14.6. A user may be unable to fully delete browsing history.
How severe is CVE-2021-30999?: CVE-2021-30999 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability none.
Is CVE-2021-30999 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (42nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-30999?: CVE-2021-30999 primarily affects Apple Ipados. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2021-30999?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-30999 published?: CVE-2021-30999 was published on 2021-08-24 and last updated on 2026-06-17.

References

https://support.apple.com/en-us/HT212528

Affected products (2)

cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:*
cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*

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