CVE-2026-43753

MEDIUM 4.6 ALL-YEARS

Published 2026-07-27 · Last modified 2026-07-28 · apple · NVD: Analyzed

An out-of-bounds read was addressed with improved bounds checking. This issue is fixed in iOS 26.6 and iPadOS 26.6, macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, macOS Tahoe 26.6. An attacker with physical access to a locked device may be able to view sensitive user information.

LIMITED SIGNALS

No known exploitation, public exploit, or elevated probability at this time. Track for changes.

Exploitation likelihood

0.2%chance of exploitation in 30 days · 12th percentile

○ In CISA KEV○ Catalogued PoC◆ SSVC: exploitation none, automatable no

Impact if exploited

4.6CVSS 3.1 · MEDIUM · ADP

ConfidentialityHigh
IntegrityNone
AvailabilityNone

What an attacker needs

⚠Access: Requires physical access to the device
✓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

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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 Ipados Iphone Os

Weakness (CWE)

CWE-125: Out-of-bounds Read

CVSS vector

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

References and research data (JSON)

Known Affected Software Configurations

Vendor	Product	Version range
Apple	Ipados	< 26.6
Apple	Iphone Os	< 26.6
Apple	Macos	≥ 14.0 and < 14.8.8
Apple	Macos	≥ 15.0 and < 15.7.8
Apple	Macos	≥ 26.0 and < 26.6

All CVSS metrics

MEDIUM 4.6 v3.1 · ADP Primary
CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
MEDIUM 4.6 v3.1 · NVD Secondary
CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

References

Advisories

https://support.apple.com/en-us/128066 Release NotesVendor AdvisoryCVE record · apple · Updated 2026-07-27T20:13:12.387Z
NVD · CVE-2026-43753 · Updated 2026-07-28T19:32:15.330
https://support.apple.com/en-us/128067 Release NotesVendor AdvisoryCVE record · apple · Updated 2026-07-27T20:13:12.387Z
NVD · CVE-2026-43753 · Updated 2026-07-28T19:32:15.330
https://support.apple.com/en-us/128071 Release NotesVendor AdvisoryCVE record · apple · Updated 2026-07-27T20:13:12.387Z
NVD · CVE-2026-43753 · Updated 2026-07-28T19:32:15.330
https://support.apple.com/en-us/128072 Release NotesVendor AdvisoryCVE record · apple · Updated 2026-07-27T20:13:12.387Z
NVD · CVE-2026-43753 · Updated 2026-07-28T19:32:15.330
https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-49514 ADVISORYEUVD · EUVD-2026-49514

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