CVE-2026-84604: A stack buffer overflow was addressed through improved input validation

Q: How do I fix CVE-2026-84604?

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

Q: Is CVE-2026-84604 being exploited?

CVE-2026-84604 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-2026-84604 affect?

CVE-2026-84604 affects macos. Severity is high (CVSS 7.8). A stack buffer overflow was addressed through improved input validation. This issue is fixed in macOS Golden Gate 27, macOS Sequoia 15.8.2, macOS Tahoe 26.7.2. Processing a maliciously crafted audit file may corrupt process memory.

Routine

HIGH 7.8UPGRADE

CVE-2026-84604 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.

A stack buffer overflow was addressed through improved input validation. This issue is fixed in macOS Golden Gate 27, macOS Sequoia 15.8.2, macOS Tahoe 26.7.2. Processing a maliciously crafted audit file may corrupt process memory.

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 85%)
CISA exploited list	No
Weakness	CWE-787
Published	2026-10-26
Last modified	2026-11-02

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

Last updated 2026-11-02 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-10-26 21:20 UTCPublished CVE record published
2026-11-02 14:53 UTCUpdated Record last modified

apple macos UPGRADE

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

Fixed in: 15.8.2, 26.7.2

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.

Advisories and coverage

Research and news

Vulners Bulletins: CVE-2026-84604 2026-10-26

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-2026-84604?

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

Is CVE-2026-84604 being exploited?

CVE-2026-84604 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-2026-84604 affect?

CVE-2026-84604 affects macos. Severity is high (CVSS 7.8). A stack buffer overflow was addressed through improved input validation. This issue is fixed in macOS Golden Gate 27, macOS Sequoia 15.8.2, macOS Tahoe 26.7.2. Processing a maliciously crafted audit file may corrupt process memory.

How urgent is CVE-2026-84604?

Priority 31/100. High severity

Software pages

macOS vulnerabilities

Related CVEs

CVE-2026-84599 HIGH 7.8 UPGRADE UPGRADE The issue was addressed with improved memory handling
CVE-2026-84595 MEDIUM 5.5 UPGRADE UPGRADE An out-of-bounds write issue was addressed with improved bounds checking
CVE-2026-113907 MEDIUM 6.1 UPGRADE UPGRADE A buffer overflow issue was addressed with improved memory handling
CVE-2026-113896 MEDIUM 4.7 UPGRADE UPGRADE A race condition was addressed with additional validation
CVE-2026-112688 HIGH 8.8 UPGRADE UPGRADE A memory corruption issue was addressed with improved memory handling

References

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