HIGH
CVE-2026-20620
CWE-125Published: February 11, 2026· Updated: Feb 17, 2026
7.7
CVSS v3.1
EPSS:0.01%probability of exploitation in 30 daysPercentile:0.2th
Official Description
An out-of-bounds read issue was addressed with improved input validation. This issue is fixed in macOS Sequoia 15.7.4, macOS Tahoe 26.3, macOS Sonoma 14.8.4. An attacker may be able to cause unexpected system termination or read kernel memory.
Technical Analysis
CVE-2026-20620 requires local access, meaning attackers must already have a foothold on the target system.
The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.
A successful exploit results in complete confidentiality breach (data exposure), availability disruption (denial of service), with a CVSS base score of 7.7.
CVSS v3.1 Vector Breakdown
Exploitability
Attack VectorLocal
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityNone
AvailabilityHigh
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
Affected Vendors & Products
Apple1 product
macos
Source: NVD CPE · 1 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/126348Release Notes · Vendor Advisory
→
https://support.apple.com/en-us/126349Release Notes · Vendor Advisory
→
https://support.apple.com/en-us/126350Release Notes · Vendor Advisory
Quick Facts
CVE IDCVE-2026-20620
CVSS Score7.7 / 10
SeverityHIGH
WeaknessCWE-125
CISA KEVNo
EPSS (30d)0.01%
Affected1 vendor
PublishedFeb 11, 2026
Related CVEs (CWE-125)
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2026-20620 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.