Skip to main content

Apple iOS CVE-2026-84523

| EUVDEUVD-2026-77940 MEDIUM
Out-of-bounds Write (CWE-787)
2026-09-14 apple GHSA-p44q-xh35-p8h9
Buffer Overflow Memory Corruption Apple macOS Tvos Visionos Watchos Ios And Ipados
5.5
CVSS 3.1 · Vendor: apple
Share

Severity by source

Vendor (apple) PRIMARY
5.5 MEDIUM
AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
vuln.today AI
5.5 MEDIUM

Local app context drives AV:L and PR:L; low complexity and no user interaction, with kernel panic as the confirmed availability impact only.

3.1 AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
4.0 AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

Primary rating from Vendor (apple).

CVSS VectorVendor: apple

Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

Lifecycle Timeline

6
Metadata Corrected
Sep 15, 2026 - 16:40 vuln.today
tag: macOS added
Analysis Generated
Sep 15, 2026 - 16:22 vuln.today
CVSS changed
Sep 15, 2026 - 16:22 NVD
5.5 (MEDIUM)
Patch available
Sep 14, 2026 - 22:19 EUVD
CVE Published
Sep 14, 2026 - 20:51 cve.org
MEDIUM 5.5
CVE Published
Sep 14, 2026 - 20:51 cve.org
UNKNOWN (no severity yet)

DescriptionCVE.org

An out-of-bounds write issue was addressed with improved bounds checking. This issue is fixed in iOS 26.7 and iPadOS 26.7, iOS 27 and iPadOS 27, macOS Golden Gate 27, macOS Sequoia 15.8, macOS Tahoe 26.7, tvOS 27, visionOS 27, watchOS 27. An app may be able to cause unexpected system termination or write kernel memory.

AnalysisAI

An out-of-bounds write in Apple's operating system kernel (CWE-787) allows a locally installed app to corrupt kernel memory or force an unexpected system termination, affecting iOS/iPadOS, macOS, tvOS, visionOS, and watchOS. Apple fixed the flaw with improved bounds checking in iOS 26.7 and 27, iPadOS 26.7 and 27, macOS Sequoia 15.8, macOS Tahoe 26.7, macOS Golden Gate 27, tvOS 27, visionOS 27, and watchOS 27. …

Unlock full vulnerability intelligence

  • Risk assessment & exploitation conditions
  • Attack chain visualization
  • Remediation with exact patch versions
  • Threat intelligence from 22 sources
  • Personal watchlist & email alerts
Continue with Google Continue with GitHub

Free forever · No credit card required

Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
technique details hidden
Delivery
technique details hidden
Exploit
technique details hidden
Execution
technique details hidden
Persist
technique details hidden
Impact
technique details hidden
Sign in to reveal

Vulnerability AssessmentAI

Exploitation Exploitation requires the ability to run a locally installed application on the target device - the CVSS vector specifies AV:L with PR:L (authenticated/local app context), so the attacker must already have code execution inside the app sandbox, typically via App Store, enterprise distribution, sideloading, or a third-party marketplace install. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The CVSS 3.1 base score of 5.5 (Medium) derives from AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H - trivial to trigger technically, but requiring the attacker to already have a locally installed app on the device, with impact scored purely as availability (kernel panic / system termination). … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario Full exploit scenario with step-by-step reproduction available after sign-in.
Remediation Apply the vendor-released fixes: update iOS and iPadOS to 26.7 or 27, macOS Sequoia to 15.8, macOS Tahoe to 26.7, macOS Golden Gate to 27, and tvOS, visionOS, and watchOS to 27, per the Apple advisories at https://support.apple.com/en-us/149034, 149035, 149036, 149037, 149038, 149041, 149042, and 149043. … Detailed patch versions, workarounds, and compensating controls in full report.
Sign in to read full assessment

Threat intelligence, references, and detailed analysis are available after sign-in.

More in macOS

View all
CVE-2025-34089 CRITICAL POC
9.3 Jul 03

An unauthenticated remote code execution vulnerability exists in Remote for Mac, a macOS remote control utility develope
CVE-2023-43000 HIGH POC
8.8 Nov 05

A use-after-free issue was addressed with improved memory management. Rated high severity (CVSS 8.8), this vulnerability
CVE-2026-20700 HIGH POC
7.8 Feb 11

Apple's kernel across all platforms (iOS, macOS, watchOS, visionOS, tvOS) contains a memory corruption vulnerability (CV
CVE-2023-48795 MEDIUM POC
5.9 Dec 18

The SSH transport protocol with certain OpenSSH extensions, found in OpenSSH before 9.6 and other products, allows remot
CVE-2022-48618 HIGH
7.0 Jan 09

The issue was addressed with improved checks. Rated high severity (CVSS 7.0). Actively exploited in the wild (cisa kev)

CVE-2024-27822 HIGH POC
7.8 May 14

A logic issue was addressed with improved restrictions. Rated high severity (CVSS 7.8), this vulnerability is no authent
CVE-2023-22809 HIGH POC
7.8 Jan 18

In Sudo before 1.9.12p2, the sudoedit (aka -e) feature mishandles extra arguments passed in the user-provided environmen
CVE-2022-46689 HIGH POC
7.0 Dec 15

A race condition was addressed with additional validation. Rated high severity (CVSS 7.0), this vulnerability is no auth
CVE-2022-32845 CRITICAL POC
10.0 Sep 23

This issue was addressed with improved checks. Rated critical severity (CVSS 10.0), this vulnerability is remotely explo
CVE-2022-32221 CRITICAL POC
9.8 Dec 05

When doing HTTP(S) transfers, libcurl might erroneously use the read callback (`CURLOPT_READFUNCTION`) to ask for data t
CVE-2022-32207 CRITICAL POC
9.8 Jul 07

When curl < 7.84.0 saves cookies, alt-svc and hsts data to local files, it makes the operation atomic by finalizing the

CVE-2021-44790 CRITICAL POC
9.8 Dec 20

A carefully crafted request body can cause a buffer overflow in the mod_lua multipart parser (r:parsebody() called from

Same weakness CWE-787 – Out-of-bounds Write

View all
CVE-2015-3113 CRITICAL POC
9.8
CVE-2011-2462 CRITICAL POC
9.8
CVE-2012-1889 HIGH POC
8.8
CVE-2010-3333 HIGH POC
7.8
CVE-2014-1761 HIGH POC
7.8
CVE-2009-3129 HIGH POC
7.8
CVE-2021-1732 HIGH POC
7.8
CVE-2013-3346 CRITICAL POC
9.8

Same technique Buffer Overflow

View all
CVE-2017-7269 CRITICAL POC
9.8
CVE-2015-5119 CRITICAL POC
9.8
CVE-2015-3113 CRITICAL POC
9.8
CVE-2011-2462 CRITICAL POC
9.8
CVE-2020-0796 CRITICAL POC
10.0
CVE-2019-11043 CRITICAL POC
9.8
CVE-2009-0927 HIGH POC
8.8
CVE-2012-1889 HIGH POC
8.8

Share

CVE-2026-84523 vulnerability details – vuln.today
Back

This site uses cookies essential for authentication and security. No tracking or analytics cookies are used. Privacy Policy