Skip to main content

Apple iOS/iPadOS EUVDEUVD-2026-110344

| CVE-2026-86971 MEDIUM
Out-of-bounds Write (CWE-787)
2026-10-26 apple GHSA-9wv9-38gm-3q7c
6.5
CVSS 3.1 · Vendor: apple
View

Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata – not a confirmed exploit chain

  1. Access
    Deliver crafted image to target
  2. Exploit
    Victim app processes image
  3. Execution
    Trigger out-of-bounds write
  4. Impact
    Unexpected app termination (DoS)

Vulnerability Assessment

Weakness
CWE
ASVS 5.0
V15 - Secure Coding and Architecture Bounds checking, write limits
MITRE ATT&CK

2 techniques across 2 tactics: Execution, Privilege Escalation

The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up.

Exploitation Conditions

Exploitation requires the victim to process a maliciously crafted image in an affected app, so success depends on user interaction (UI:R) - the attacker cannot trigger the crash without the target opening or rendering the attacker-supplied image. The flaw affects iOS/iPadOS before 26.7.2 and before 27.2, macOS before 15.8.2 / before 26.7.2 (Tahoe) / before 27.2 (Golden Gate/Sequoia branch), and visionOS before 27.2; patched versions are not affected. The available sources do not name the specific image format or decoding component involved, and the only confirmed outcome is application termination (denial of service), which limits realistic impact to availability of the affected app.

Impact

This is a moderate, not top-tier, priority. The CVSS 3.1 vector (AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H, base 6.5) describes a network-reachable flaw with low complexity and no privileges, but it requires user interaction and its ONLY impact is availability (C:N/I:N/A:H) - consistent with the description, which limits the outcome to 'unexpected app termination' (a crash/DoS) rather than code execution or data compromise. The signals are coherent and all point to limited urgency: EPSS is low at 0.58% (48th percentile), there is no CISA KEV listing, and CISA SSVC scores Exploitation as 'none', Automatable as 'no', and Technical Impact as only 'partial'. The vendor-aligned priority is 'this_month', not act_now or emergency. No exploit or PoC reference is present in the input, so there is no evidence of exploit availability. The one caveat for defenders: CWE-787 (out-of-bounds write) is a memory-corruption class that can sometimes be escalated beyond a crash, but nothing in the supplied evidence indicates this instance achieves more than denial of service, and the C:N/I:N impact metrics reflect that. Treat as routine patch-cycle work rather than an emergency.

Exploit ScenarioDerived

An attacker delivers a maliciously crafted image (for example via a message, web page, or email attachment) to a target running an affected Apple OS. When the victim's app processes or renders the image, an out-of-bounds write is triggered, causing the application to terminate unexpectedly (denial of service). No public exploit or PoC reference is present in the input.

This Month Plan within 30 days. Why: MEDIUM severity (CVSS 4.0-6.9).
Patch available 0.6% exploitation probability (EPSS)

Get an e-mail when this CVE is exploited, patched or re-scored. Free account.

Alert me

AnalysisAIv1 – Oct 28, 2026

An out-of-bounds write in Apple's image handling on iOS/iPadOS, macOS and visionOS can terminate the affected application when a user opens a maliciously crafted image, giving an availability-only denial-of-service outcome (CVSS 6.5, C:N/I:N/A:H). The attacker cannot trigger the fault directly: exploitation requires the victim to process the crafted file in an affected app, as reflected by the UI:R vector component, and macOS is affected across three branches (Sequoia before 15.8.2, Tahoe before 26.7.2, Golden Gate before 27.2) while iOS/iPadOS is affected before 26.7.2 and before 27.2 and visionOS before 27.2. Apple has released fixes for all listed platforms with improved bounds checking; no public exploit identified at time of analysis, EPSS is 0.58% (48th percentile), and CISA SSVC rates exploitation as none with partial technical impact, making this a moderate, not top-tier, priority.

RemediationAI

Vendor-released patches are available: update iOS and iPadOS to 26.7.2 or 27.2, macOS Sequoia to 15.8.2, macOS Tahoe to 26.7.2, macOS Golden Gate to 27.2, and visionOS to 27.2; those versions contain the improved bounds checking that removes the out-of-bounds write. Advisory details and download links are in the Apple security documents at https://support.apple.com/en-us/149227, https://support.apple.com/en-us/149230, https://support.apple.com/en-us/149521, https://support.apple.com/en-us/149522, https://support.apple.com/en-us/149523 and https://support.apple.com/en-us/149526. The supplied sources do not document a workaround or configuration-level mitigation for this issue, and the only stated impact is application termination after an attacker-supplied image is processed, so exposure before patching is bounded by the requirement that a user open the crafted image - the practical interim measure is to prioritise the update on devices and Macs that routinely handle image files from untrusted sources, consistent with the this_month remediation priority rather than emergency handling.

Affected VersionsENISA

iOS and iPadOS 0 <27.2
macOS 0 <15.8.2
macOS 0 <27.2
macOS 0 <26.7.2
visionOS 0 <27.2
iOS and iPadOS 0 <26.7.2

Affected Packages

euvd ios_and_ipados fix: 26.7.2, 27.2
euvd macos fix: 15.8.2, 26.7.2, 27.2
euvd visionos fix: 27.2

Source: OSV (Open Source Vulnerabilities)

Affects your stack

Affects 3 packages in euvd

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

The root cause is CWE-787, an out-of-bounds write in memory handling code reached while processing image data; Apple's advisory language attributes the fault to insufficient bounds checking and states that it was addressed by improving that checking. Because the vector is AV:N/AC:L/PR:N/UI:R/S:U with C:N/I:N/A:H, the realistic consequence described in the supplied sources is memory corruption that manifests as unexpected application termination - availability loss within the context of the vulnerable app - rather than code execution or data disclosure. The sources do not name the specific image format, decoder, framework (for example ImageIO or CoreGraphics) or code path involved, and the trigger beyond 'processing a maliciously crafted image' is not described in the available sources; likewise the exploitability traits that would explain the low attack complexity (AC:L) in mechanism terms are not documented. Affected builds enumerated by the CPE data (apple:ios_and_ipados, apple:macos, apple:visionos) and the EUVD version ranges confirm the flaw is present across Apple's mobile, desktop and spatial-computing platforms, which typically share imaging code, and patched builds are not affected.

Know when macOS gets its next vulnerability

  • Watch products and get an email when something new is published
  • Check this CVE against your own stack and servers
  • Exploit and PoC references, threat intelligence from 22 sources

No credit card · 7-day full trial

Severity by source

Vendor (apple) PRIMARY 6.5 MEDIUM
AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
vuln.today AI 6.5 MEDIUM

Crafted image is network-deliverable (AV:N) and needs no privileges, but the victim must process it (UI:R); only outcome described is app termination, so C:N/I:N/A:H.

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

Primary rating from Vendor (apple).

CVSS VectorVendor: apple

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

Lifecycle Timeline

4
CVSS changed
Oct 27, 2026 - 01:24 NVD
6.5 (None) 6.5 (MEDIUM)
Patch available
Oct 26, 2026 - 21:03 EUVD
CVE Published
Oct 26, 2026 - 20:33 cve.org
MEDIUM 6.5
CVE Published
Oct 26, 2026 - 20:33 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 26.7.2 and iPadOS 26.7.2, iOS 27.2 and iPadOS 27.2, macOS Golden Gate 27.2, macOS Sequoia 15.8.2, macOS Tahoe 26.7.2, visionOS 27.2. Processing a maliciously crafted image may lead to unexpected app termination.

Threat Intelligence Overview

EPSS Score
0.6%
Top 52% exploitable
Prevalence
Ubiquitous
Apple iOS, iPadOS, macOS and visionOS - massive consumer and enterprise footprint
Data Quality
5 sources
Confidence: Medium

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue
Severity MEDIUM
CISA KEV No
Public POC No
EPSS 0.6%
Patch available Yes
Active threat No
Deciding rule
MEDIUM severity (CVSS 4.0-6.9)
What every action level means
Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.
Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.
This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.
This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.
Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived
Scheduled
Exploitation
None
System Exposure· derived
Open
Automatable
No
Human Impact· derived
Medium
Technical Impact
Partial

Priority Score

33
Low Medium High Critical
KEV: 0
EPSS: +1
CVSS: +32
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

A buffer overflow occurs when a program writes more data to a memory buffer than it was allocated to hold, causing the excess data to spill into adjacent memory regions.

Memory corruption occurs when a program writes data beyond the boundaries of allocated memory regions or accesses memory in unintended ways, violating the integrity of the process's address space.

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-2026-86950 HIGH POC
8.8 Sep 28

Out-of-bounds write in Apple's iOS, iPadOS, and macOS file-parsing code lets remote attackers achieve arbitrary code exe

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-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-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

CVE-2025-52841 HIGH POC
8.8 Jul 02

Cross-Site Request Forgery (CSRF) vulnerability in Laundry on Linux, MacOS allows to perform an Account Takeover. This i

CVE-2022-3970 HIGH POC
8.8 Nov 13

A vulnerability was found in LibTIFF. Rated high severity (CVSS 8.8), this vulnerability is remotely exploitable, no aut

CVE-2022-0729 HIGH POC
8.8 Feb 23

Use of Out-of-range Pointer Offset in GitHub repository vim/vim prior to 8.2.4440. Rated high severity (CVSS 8.8), this

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