CVE-2026-39868

CRITICAL 9.1 ALL-YEARS

Published 2026-06-29 · Last modified 2026-08-17 · apple · NVD: Undergoing Analysis

This issue was addressed with improved input validation. This issue is fixed in iOS 18.7.10 and iPadOS 18.7.10, iOS 26.5.2 and iPadOS 26.5.2, macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, macOS Tahoe 26.5.2, tvOS 26.6, visionOS 26.6, watchOS 26.6. An app may be able to cause unexpected system termination or corrupt kernel memory.

ELEVATED IMPACT

Severe if exploited (CVSS 9.1), but no confirmed exploitation. Patch on a normal cadence.

Exploitation likelihood

0.7%chance of exploitation in 30 days · 52nd percentile

○ In CISA KEV○ Catalogued PoC◆ SSVC: exploitation none, automatable yes

Impact if exploited

9.1CVSS 3.1 · CRITICAL · ADP

ConfidentialityNone
IntegrityHigh
AvailabilityHigh

What an attacker needs

✓Access: Reachable over the network — no local access needed
✓Privileges: No account or privileges required
✓User interaction: No user interaction needed
✓Complexity: No special conditions — reliably repeatable

✓ lowers the bar for an attacker · ⚠ raises it

Proof of concept

No public PoC is currently catalogued.

Search for new PoCs

Search GitHub now — results may be empty or unverified.

Tracked sources are checked weekly for the full archive, including PoCs published after the original disclosure. A later release appears after a tracked source lists it and a refresh succeeds.

Affected

Vendors Apple

Products Ios And Ipados Macos Tvos Visionos Watchos Ipados Iphone Os

Weakness (CWE)

CWE-20: Improper Input Validation

CVSS vector

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

References and research data (JSON)

Known Affected Software Configurations

Vendor	Product	Version range
Apple	Ipados	< 26.5.2
Apple	Iphone Os	< 26.5.2
Apple	Macos	< 26.5.2

All CVSS metrics

CRITICAL 9.1 v3.1 · ADP Primary
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
CRITICAL 9.1 v3.1 · NVD Secondary
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H

References

Advisories

https://support.apple.com/en-us/127594 Vendor AdvisoryCVE record · apple · Updated 2026-08-17T21:31:22.736Z
NVD · CVE-2026-39868 · Updated 2026-08-17T22:17:04.990
https://support.apple.com/en-us/127595 Vendor AdvisoryCVE record · apple · Updated 2026-08-17T21:31:22.736Z
NVD · CVE-2026-39868 · Updated 2026-08-17T22:17:04.990
https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-40216 ADVISORYEUVD · EUVD-2026-40216

Technical & other

https://support.apple.com/en-us/128068CVE record · apple · Updated 2026-08-17T21:31:22.736Z
NVD · CVE-2026-39868 · Updated 2026-08-17T22:17:04.990
https://support.apple.com/en-us/128069CVE record · apple · Updated 2026-08-17T21:31:22.736Z
NVD · CVE-2026-39868 · Updated 2026-08-17T22:17:04.990
https://support.apple.com/en-us/128070CVE record · apple · Updated 2026-08-17T21:31:22.736Z
NVD · CVE-2026-39868 · Updated 2026-08-17T22:17:04.990
https://support.apple.com/en-us/128071CVE record · apple · Updated 2026-08-17T21:31:22.736Z
NVD · CVE-2026-39868 · Updated 2026-08-17T22:17:04.990
https://support.apple.com/en-us/128072CVE record · apple · Updated 2026-08-17T21:31:22.736Z
NVD · CVE-2026-39868 · Updated 2026-08-17T22:17:04.990
https://support.apple.com/en-us/148287CVE record · apple · Updated 2026-08-17T21:31:22.736Z
NVD · CVE-2026-39868 · Updated 2026-08-17T22:17:04.990

Sources: NVD · CVE.org · All sources and attribution · EPSS