MEDIUM
CVE-2026-20657
Published: March 25, 2026· Updated: Mar 26, 2026
6.5
CVSS v3.1
EPSS:0.02%probability of exploitation in 30 daysPercentile:5.0th
Official Description
The issue was addressed with improved memory handling. This issue is fixed in iOS 18.7.7 and iPadOS 18.7.7, macOS Sequoia 15.7.5, macOS Sonoma 14.8.5. Parsing a maliciously crafted file may lead to an unexpected app termination.
Technical Analysis
CVE-2026-20657 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.
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 availability disruption (denial of service), with a CVSS base score of 6.5.
CVSS v3.1 Vector Breakdown
Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionRequired
ScopeUnchanged
Impact
ConfidentialityNone
IntegrityNone
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Affected Vendors & Products
Apple3 products
ipadosiphone osmacos
Source: NVD CPE · 3 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
All References (3)
→
https://support.apple.com/en-us/126793Release Notes · Vendor Advisory
→
https://support.apple.com/en-us/126795Release Notes · Vendor Advisory
→
https://support.apple.com/en-us/126796Release Notes · Vendor Advisory
Quick Facts
CVE IDCVE-2026-20657
CVSS Score6.5 / 10
SeverityMEDIUM
CISA KEVNo
EPSS (30d)0.02%
Affected1 vendor
PublishedMar 25, 2026
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2026-20657 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.