HOMEVULNERABILITIESCVE-2026-20687
HIGH

CVE-2026-20687

Published: March 25, 2026· Updated: Mar 25, 2026

7.1
CVSS v3.1
EPSS:0.02%probability of exploitation in 30 daysPercentile:6.5th

Official 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.

NVD Source

Technical Analysis

CVE-2026-20687 requires local access, meaning attackers must already have a foothold on the target system.

Exploitation does not require any privileges, though user interaction (Required) is needed, which slightly reduces the risk of mass automated attacks.

A successful exploit results in full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 7.1.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorLocal
Attack ComplexityLow
Privileges Req.None
User InteractionRequired
ScopeUnchanged
Impact
ConfidentialityNone
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H

Affected Vendors & Products

Apple5 products
ipadosiphone osmacostvoswatchos
Source: NVD CPE · 5 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

ADVISORYhttps://support.apple.com/en-us/126792
ADVISORYhttps://support.apple.com/en-us/126793
ADVISORYhttps://support.apple.com/en-us/126794
ADVISORYhttps://support.apple.com/en-us/126795
ADVISORYhttps://support.apple.com/en-us/126797
ADVISORYhttps://support.apple.com/en-us/126798

All References (6)

→
https://support.apple.com/en-us/126792Release Notes · Vendor Advisory
→
https://support.apple.com/en-us/126793Release Notes · Vendor Advisory
→
https://support.apple.com/en-us/126794Release Notes · Vendor Advisory
→
https://support.apple.com/en-us/126795Release Notes · Vendor Advisory
→
https://support.apple.com/en-us/126797Release Notes · Vendor Advisory
→
https://support.apple.com/en-us/126798Release Notes · Vendor Advisory

Quick Facts

CVE IDCVE-2026-20687
CVSS Score7.1 / 10
SeverityHIGH
CISA KEVNo
EPSS (30d)0.02%
Affected1 vendor
PublishedMar 25, 2026

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2026-20687 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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