Is CVE-2026-39868 in the CISA KEV catalog?

No. CVE-2026-39868 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2026-39868?

CVE-2026-39868 has a CVSS v3 base score of 9.1 (CRITICAL).

What is the EPSS score for CVE-2026-39868?

CVE-2026-39868 has an EPSS score of 0.37% (29th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2026-39868?

Upgrade ipados to 26.5.2 or later. Fixes are available for 3 affected products.

CVE & CISA-KEV Catalog

CVE-2026-39868

CRITICAL

9.1

CVSS v3

NVD

Description

This issue was addressed with improved input validation. This issue is fixed in iOS 26.5.2 and iPadOS 26.5.2, macOS Tahoe 26.5.2. An app may be able to cause unexpected system termination or corrupt kernel memory.

CWE-20Improper Input Validation

How to fix

Remediation Available

ipadosNVD

Affected:< 26.5.2Fixed in:26.5.2CVE-2026-39868derived from NVD

iphone osNVD

Affected:< 26.5.2Fixed in:26.5.2CVE-2026-39868derived from NVD

macosNVD

Affected:< 26.5.2Fixed in:26.5.2CVE-2026-39868derived from NVD

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 InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityHigh

AvailabilityHigh

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

Exploit Intelligence

0.37%probability of exploitation in 30 days

29thpercentile

Low risk: more likely to be exploited than 29% of all known CVEs.

References

Vendor Advisory2

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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 2026-06-30.