CVE-2026-112670: An out-of-bounds write issue was addressed with improved input validation

Q: How do I fix CVE-2026-112670?

macos: upgrade to 15.8.2, 26.7.2, 27.2. Exact commands for each OS are on this page.

Q: Is CVE-2026-112670 being exploited?

CVE-2026-112670 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-2026-112670 affect?

CVE-2026-112670 affects macos. Severity is high (CVSS 7.8). An out-of-bounds write issue was addressed with improved input validation. This issue is fixed in macOS Golden Gate 27.2, macOS Sequoia 15.8.2, macOS Tahoe 26.7.2. Processing a maliciously crafted file may lead to heap corruption.

Routine

HIGH 7.8UPGRADE

CVE-2026-112670 is a high-severity flaw (CVSS 7.8) affecting macos. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

An out-of-bounds write issue was addressed with improved input validation. This issue is fixed in macOS Golden Gate 27.2, macOS Sequoia 15.8.2, macOS Tahoe 26.7.2. Processing a maliciously crafted file may lead to heap corruption.

Why this priority

High severity

A fixed release or distro patch exists.

Risk facts

CVSS score	7.8 (High)
Attack vector	Local
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.2% (top 86%)
CISA exploited list	No
Weakness	CWE-787
Published	2026-10-26
Last modified	2026-11-03

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

Last updated 2026-11-03 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-10-26 21:18 UTCPublished CVE record published
2026-11-03 20:50 UTCUpdated Record last modified

apple macos UPGRADE

Affected: >= 15.0 and < 15.8.2 · >= 26.0 and < 26.7.2 · >= 27.0 and < 27.2

Fixed in: 15.8.2, 26.7.2, 27.2

Safe to downgrade to: a release before 15.0

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-2026-112670?

macos: upgrade to 15.8.2, 26.7.2, 27.2. Exact commands for each OS are on this page.

Is CVE-2026-112670 being exploited?

CVE-2026-112670 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-2026-112670 affect?

CVE-2026-112670 affects macos. Severity is high (CVSS 7.8). An out-of-bounds write issue was addressed with improved input validation. This issue is fixed in macOS Golden Gate 27.2, macOS Sequoia 15.8.2, macOS Tahoe 26.7.2. Processing a maliciously crafted file may lead to heap corruption.

How urgent is CVE-2026-112670?

Priority 31/100. High severity

Software pages

macOS vulnerabilities

Related CVEs

CVE-2026-113949 HIGH 8.8 UPGRADE UPGRADE A type confusion issue was addressed with improved state management
CVE-2026-112696 HIGH 7.8 UPGRADE UPGRADE An out-of-bounds write issue was addressed with improved bounds checking
CVE-2024-54529 HIGH 7.8 UPGRADE A logic issue was addressed with improved checks
CVE-2024-54505 HIGH 8.8 UPGRADE UPGRADE A type confusion issue was addressed with improved memory handling
CVE-2024-54465 CRITICAL 9.8 UPGRADE A logic issue was addressed with improved state management

References

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