CVE-2026-20687
Apple iOS Use After Free Kernel Memory Corruption
Description
A use after free issue was addressed with improved memory management. This issue is fixed in iOS 18.7.7 and iPadOS 18.7.7, iOS 26.4 and iPadOS 26.4, macOS Sequoia 15.7.5, macOS Tahoe 26.4, tvOS 26.4, watchOS 26.4. An app may be able to cause unexpected system termination or write kernel memory.
INFO
Published Date :
March 25, 2026, 1:17 a.m.
Last Modified :
March 25, 2026, 8:07 p.m.
Remotely Exploit :
No
Source :
[email protected]
Affected Products
The following products are affected by CVE-2026-20687
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | HIGH | 134c704f-9b21-4f2e-91b3-4a467353bcc0 |
Solution
- Update iOS and iPadOS to the latest versions.
- Update macOS to the latest versions.
- Update tvOS and watchOS to the latest versions.
Public PoC/Exploit Available at Github
CVE-2026-20687 has a 5 public
PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-20687.
| URL | Resource |
|---|---|
| https://support.apple.com/en-us/126792 | Release Notes Vendor Advisory |
| https://support.apple.com/en-us/126793 | Release Notes Vendor Advisory |
| https://support.apple.com/en-us/126794 | Release Notes Vendor Advisory |
| https://support.apple.com/en-us/126795 | Release Notes Vendor Advisory |
| https://support.apple.com/en-us/126797 | Release Notes Vendor Advisory |
| https://support.apple.com/en-us/126798 | Release Notes Vendor Advisory |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-20687 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-20687
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Free, open-source iCloud activation lock bypass tool. Remove iCloud lock from iPhone 5s through iPhone 15 Pro (iOS 12-26.1). Fully offline -- no servers, no payments. Supports checkm8 (A5-A11) and session activation (A12+).
activation-lock apple bypass-tool checkm8 dfu icloud-bypass ios iphone jailbreak security-research
Makefile C Shell Python
CVE-2026-20687: AppleJPEGDriver startDecoder Timeout UAF — iOS/macOS kernel vulnerability leading to deferred panic (A19 Pro, iOS 26.3 RC)
apple arm64 ios kernel poc security use-after-free vulnerability cve-2026-20687
Objective-C
An auto updating feed based on the folks I follow in case I miss something.
Python
None
Python
📡 PoC auto collect from GitHub. ⚠️ Be careful Malware.
security cve exploit poc vulnerability
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-20687 vulnerability anywhere in the article.
-
CybersecurityNews
Apple Expands iOS 18.7.7 Update to More Devices to Shield Users from DarkSword Exploit
Apple has taken the rare step of expanding the availability of iOS 18.7.7 and iPadOS 18.7.7 to a broader set of devices on April 1, 2026, pushing critical backported security patches to millions of us ... Read more
The following table lists the changes that have been made to the
CVE-2026-20687 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Initial Analysis by [email protected]
Mar. 25, 2026
Action Type Old Value New Value Added CPE Configuration OR *cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:* versions from (including) 15.0 up to (excluding) 15.7.5 *cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:* versions from (including) 26.0 up to (excluding) 26.4 *cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:* versions up to (excluding) 18.7.7 *cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:* versions from (including) 26.0 up to (excluding) 26.4 *cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:* versions up to (excluding) 18.7.7 *cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:* versions from (including) 26.0 up to (excluding) 26.4 *cpe:2.3:o:apple:tvos:*:*:*:*:*:*:*:* versions up to (excluding) 26.4 *cpe:2.3:o:apple:watchos:*:*:*:*:*:*:*:* versions up to (excluding) 26.4 Added Reference Type Apple Inc.: https://support.apple.com/en-us/126792 Types: Release Notes, Vendor Advisory Added Reference Type Apple Inc.: https://support.apple.com/en-us/126793 Types: Release Notes, Vendor Advisory Added Reference Type Apple Inc.: https://support.apple.com/en-us/126794 Types: Release Notes, Vendor Advisory Added Reference Type Apple Inc.: https://support.apple.com/en-us/126795 Types: Release Notes, Vendor Advisory Added Reference Type Apple Inc.: https://support.apple.com/en-us/126797 Types: Release Notes, Vendor Advisory Added Reference Type Apple Inc.: https://support.apple.com/en-us/126798 Types: Release Notes, Vendor Advisory -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Mar. 25, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H Added CWE CWE-416 -
New CVE Received by [email protected]
Mar. 25, 2026
Action Type Old Value New Value Added Description A use after free issue was addressed with improved memory management. This issue is fixed in iOS 18.7.7 and iPadOS 18.7.7, iOS 26.4 and iPadOS 26.4, macOS Sequoia 15.7.5, macOS Tahoe 26.4, tvOS 26.4, watchOS 26.4. An app may be able to cause unexpected system termination or write kernel memory. Added Reference https://support.apple.com/en-us/126792 Added Reference https://support.apple.com/en-us/126793 Added Reference https://support.apple.com/en-us/126794 Added Reference https://support.apple.com/en-us/126795 Added Reference https://support.apple.com/en-us/126797 Added Reference https://support.apple.com/en-us/126798