Dashboard / CVE-2026-65400

CVE-2026-65400

CRITICAL CISA KEV
ACT NOW Priority: 0.17 BB Relevance: 80/100
Published: 2026-08-06 Modified: 2026-10-26 First seen: 2026-10-29 Status: active

Attack Surface

Network Low Complexity No Auth No Interaction Conf. Impact Integ. Impact

CVSS Vector Breakdown

AV: Network
AC: Low
PR: None
UI: None
S: Unchanged
C: High
I: High
A: High

Description

Apple macOS contains an improper authentication vulnerability that could allow an attacker on the network to authenticate to Screen Sharing without valid credentials.

CISA Known Exploited Vulnerability

Vendor / Product Apple — macOS
Date Added 2026-08-18
Remediation Due 2026-08-21
https://support.apple.com/en-us/148170; https://support.apple.com/en-us/148171; https://support.apple.com/en-us/148172 ; BOD 26-04: https://www.cisa.gov/news-events/directives/bod-26-04-prioritizing-security-updates-based-risk ; Forensics Triage Requirements: https://www.cisa.gov/news-events/directives/bod-26-04-implementation-guidance-prioritizing-security-updates-based-risk ; https://nvd.nist.gov/vuln/detail/CVE-2026-65400

Weakness Classification (1)

Affected Software (3)

VendorProductVersion
apple macos 14.0 – 14.8.9
apple macos 15.0 – 15.7.9
apple macos 26.0 – 26.6.1

References & Advisories (9)

https://support.apple.com/en-us/148170
Release Notes Vendor Advisory
https://support.apple.com/en-us/148171
Release Notes Vendor Advisory
https://support.apple.com/en-us/148172
Release Notes Vendor Advisory
https://support.apple.com/en-us/149035
Release Notes Vendor Advisory
https://support.apple.com/en-us/149042
Release Notes Vendor Advisory

Bug Bounty Relevance

80 / 100
✓ Network accessible
✓ No authentication
✓ Low complexity
✓ No user interaction
✓ Known exploited (KEV)

CVSS Score

9.8 / 10.0 v3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS — Exploitation Probability

1.72%
Raw Score 0.017230
Percentile 77.4%
Date 2026-10-28

Intelligence Sources

kev ref →
mitre ref →
nvd ref →

External Links