An out-of-bounds write issue was addressed with improved bounds checking.
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Listed in CISA KEV
- How many real-world setups can hit the bug, from the vendor's advisory and CISA data. It does not know your setup.What do these mean? →
- Actively exploited
- Fix
- Fixed in 18.7.11, 26.7.1, 15.8.1
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
- Exploitation: active
- Automatable: no
- Technical impact: total
Summary
Apple iOS, iPadOS, and macOS are affected by this out-of-bounds write flaw. Processing a maliciously crafted file could allow an attacker to run arbitrary code on the device.
Summarized by anthropic/claude-haiku-5.5. Verify details against the original sources.
Read the original description
An out-of-bounds write issue was addressed with improved bounds checking. This issue is fixed in iOS 18.7.11 and iPadOS 18.7.11, iOS 26.7.1 and iPadOS 26.7.1, macOS Sequoia 15.8.1, macOS Tahoe 26.7.1. Processing a maliciously crafted file may lead to arbitrary code execution. Apple is aware of a report that this issue may have been exploited in an extremely sophisticated attack against specific targeted individuals on versions of iOS before iOS 27.
Timeline
- CVE published
- Added to CISA KEV
CISA has evidence of exploitation in the wild
- CISA SSVC assessment
Exploitation: active · Automatable: no · Technical impact: total
- CISA remediation deadline
Due date for US federal agencies to patch
- EPSS reached 10%
FIRST estimates at least a 10% chance of exploitation in the next 30 days
- Record last updated
Affected versions
- Apple iOS and iPadOS
fixed in 18.7.11; fixed in 26.7.1
- Apple macOS
fixed in 15.8.1; fixed in 26.7.1
References 4
support.apple.com
Questions about CVE-2026-86950
What does this mean?
An out-of-bounds write lets data be written outside the memory area meant for it. According to the checked facts, processing a maliciously crafted file may lead to arbitrary code execution.Source: support.apple.com, support.apple.com
Am I affected, and how do I check?
Apple lists iOS and iPadOS versions before 18.7.11 and before 26.7.1, and macOS versions before 15.8.1 and before 26.7.1. To check, look at the software version under Settings > General > About on iOS or iPadOS, or under About This Mac on macOS.Source: support.apple.com, support.apple.com
What should I do about it?
Update to iOS 26.7.1, iPadOS 26.7.1, or the macOS release that includes the fix (15.8.1 or 26.7.1), depending on the device. The checked facts do not list a workaround.Source: support.apple.com, support.apple.com
Is it being exploited?
Yes. CISA added it to its Known Exploited Vulnerabilities catalog on 2026-09-29, which means it has evidence of attacks. No public exploit code is tracked.Source: cisa.gov, cve.now feed data