CVE-2026-43811: A race condition was addressed with improved checks

Q: How do I fix CVE-2026-43811?

ipados: upgrade to 26.6; iphone os: upgrade to 26.6. Exact commands for each OS are on this page.

Q: Is CVE-2026-43811 being exploited?

CVE-2026-43811 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-43811 affect?

CVE-2026-43811 affects ipados, iphone os. Severity is medium (CVSS 4.7). A race condition was addressed with improved checks. This issue is fixed in iOS 18.7.10 and iPadOS 18.7.10, iOS 26.6 and iPadOS 26.6. An app may be able to modify protected parts of the file system.

Q: How urgent is CVE-2026-43811?

Priority 17/100. No elevated risk signals yet.

Routine

MEDIUM 4.7UPGRADEUPGRADE

CVE-2026-43811 is a medium-severity flaw (CVSS 4.7) affecting ipados, iphone os. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A race condition was addressed with improved checks. This issue is fixed in iOS 18.7.10 and iPadOS 18.7.10, iOS 26.6 and iPadOS 26.6. An app may be able to modify protected parts of the file system.

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	4.7 (Medium)
Attack vector	Local
Attack complexity	High
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.1% (top 99%)
CISA exploited list	No
Weakness	CWE-362
Published	2026-07-27
Last modified	2026-10-24

Publisher (CNA): Apple Inc. · Vendor: apple

Last updated 2026-10-24 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-07-27 21:17 UTCPublished CVE record published
2026-10-24 13:10 UTCUpdated Record last modified

apple ipados UPGRADE

Affected: < 26.6

Fixed in: 26.6

Safe to downgrade to: no unaffected older release

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

apple iphone os UPGRADE

Affected: < 26.6

Fixed in: 26.6

Safe to downgrade to: no unaffected older release

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-43811?

ipados: upgrade to 26.6; iphone os: upgrade to 26.6. Exact commands for each OS are on this page.

Is CVE-2026-43811 being exploited?

CVE-2026-43811 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-43811 affect?

CVE-2026-43811 affects ipados, iphone os. Severity is medium (CVSS 4.7). A race condition was addressed with improved checks. This issue is fixed in iOS 18.7.10 and iPadOS 18.7.10, iOS 26.6 and iPadOS 26.6. An app may be able to modify protected parts of the file system.

How urgent is CVE-2026-43811?

Priority 17/100. No elevated risk signals yet.

Software pages

iOS vulnerabilities · iPadOS vulnerabilities

Related CVEs

CVE-2026-64732 MEDIUM 4.6 UPGRADE UPGRADE This issue was addressed through improved state management
CVE-2026-65329 MEDIUM 5.9 UPGRADE UPGRADE An authentication issue was addressed with improved state management
CVE-2026-64760 MEDIUM 5.5 UPGRADE UPGRADE An information leakage was addressed with additional validation
CVE-2026-86950 HIGH 8.8 EXPLOITED UPGRADE UPGRADE Apple Multiple Products Out-of-Bounds Write Vulnerability

References

← Back to latest CVEs