Is CVE-2026-28863 in the CISA KEV catalog?

No. CVE-2026-28863 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2026-28863?

CVE-2026-28863 has a CVSS v3 base score of 6.5 (MEDIUM).

What is the EPSS score for CVE-2026-28863?

CVE-2026-28863 has an EPSS score of 0.50% (39th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2026-28863?

Update iOS to 26.4 or later. Fixes are available for 4 affected products.

CVE & CISA-KEV Catalog

CVE-2026-28863

MEDIUM

6.5

CVSS v3

NVD

Description

A permissions issue was addressed with additional restrictions. This issue is fixed in iOS 26.4 and iPadOS 26.4, tvOS 26.4, visionOS 26.4, watchOS 26.4. An app may be able to fingerprint the user.

CWE-284Improper Access Control

How to fix

Remediation Available

iOSApple

Fixed in:26.4126792

tvOSApple

Fixed in:26.4126797

visionOSApple

Fixed in:26.4126799

watchOSApple

Fixed in:26.4126798

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionRequired

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityNone

AvailabilityNone

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N

Exploit Intelligence

0.50%probability of exploitation in 30 days

39thpercentile

Low risk: more likely to be exploited than 39% of all known CVEs.

References

Vendor Advisory4

Related Vulnerabilities

Other CWE-284 (Improper Access Control) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2023-27350	Critical	9.8	100%	KEV + Ransom	Fix
CVE-2019-1653	High	7.5	100%	KEV	-
CVE-2023-23752	Medium	5.3	100%	KEV	Fix
CVE-2023-29298	High	7.5	100%	KEV	-
CVE-2023-38205	High	7.5	100%	KEV	-
CVE-2024-27348	Critical	9.8	99%	KEV	Fix

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-05-10.