---
title: "CVE-2026-84497: Apple - Buffer Overflow"
description: "Apple iOS 26.7, iPadOS 26.7, iOS 27, iPadOS 27, macOS Golden Gate 27, macOS Sequoia 15.8, macOS Tahoe 26.7, tvOS 27, and visionOS 27 contain a buffer overflow caused by insufficient size validation when opening crafted files, letting attackers cause denial of service via process termination, exploit requires opening a malicious file."
url: https://panop.io/threat-heartbeat/CVE-2026-84497/
---

# CVE-2026-84497 Apple - Buffer Overflow

Apple iOS 26.7, iPadOS 26.7, iOS 27, iPadOS 27, macOS Golden Gate 27, macOS Sequoia 15.8, macOS Tahoe 26.7, tvOS 27, and visionOS 27 contain a buffer overflow caused by insufficient size validation when opening crafted files, letting attackers cause denial of service via process termination, exploit requires opening a malicious file.

CVSS base score 7.8 /10

High

CISA KEV

Not listed

Public exploit

None known

Authentication

Not required

EPSS

0.19% chance of exploitation in 30 days

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-84497)

## Details

Type

Buffer Overflow

Impact

Denial Of Service

CVSS vector

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

Published

14 September 2026

Updated

15 October 2026

Weakness

[CWE-120](https://cwe.mitre.org/data/definitions/120.html)

## Vendor fix

Update to iOS 26.7, iPadOS 26.7, iOS 27, iPadOS 27, macOS Golden Gate 27, macOS Sequoia 15.8, macOS Tahoe 26.7, tvOS 27, and visionOS 27.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

## References

- [https://nvd.nist.gov/vuln/detail/CVE-2026-84497](https://nvd.nist.gov/vuln/detail/CVE-2026-84497)
- [https://support.apple.com/en-us/149041](https://support.apple.com/en-us/149041)
- [https://support.apple.com/en-us/149042](https://support.apple.com/en-us/149042)
- [https://support.apple.com/en-us/149043](https://support.apple.com/en-us/149043)
- [https://support.apple.com/en-us/149034](https://support.apple.com/en-us/149034)
- [https://support.apple.com/en-us/149035](https://support.apple.com/en-us/149035)
- [https://support.apple.com/en-us/149036](https://support.apple.com/en-us/149036)
- [https://support.apple.com/en-us/149038](https://support.apple.com/en-us/149038)

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## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

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