CVE-2026-43665: A local attacker may be able to determine the legacy VNC password configured for Screen Sharing in Apple macOS
This issue was addressed with additional entitlement checks. This issue is fixed in macOS Sequoia 15.7.8, macOS Sonoma 14.8.8. A local attacker may be able to determine the legacy VNC password configured for Screen Sharing.
AI Analysis
Technical Summary
CVE-2026-43665 is a vulnerability in Apple macOS where a local attacker with low privileges could potentially discover the legacy VNC password used for Screen Sharing. The vulnerability arises from insufficient entitlement checks that allowed unauthorized access to this sensitive information. Apple fixed this issue by implementing additional entitlement checks in macOS Sequoia 15.7.8 and macOS Sonoma 14.8.8. The vulnerability does not require user interaction and impacts confidentiality but not integrity or availability.
Potential Impact
An attacker with local access and low privileges could obtain the legacy VNC password configured for Screen Sharing, potentially allowing unauthorized remote access if the legacy VNC service is enabled. This compromises confidentiality but does not affect system integrity or availability. There are no known exploits in the wild at this time.
Mitigation Recommendations
This vulnerability is fixed in macOS Sequoia 15.7.8 and macOS Sonoma 14.8.8 by adding additional entitlement checks. Users and administrators should update affected systems to these versions or later to remediate the issue. No other mitigations or temporary workarounds are indicated.
CVE-2026-43665: A local attacker may be able to determine the legacy VNC password configured for Screen Sharing in Apple macOS
Description
This issue was addressed with additional entitlement checks. This issue is fixed in macOS Sequoia 15.7.8, macOS Sonoma 14.8.8. A local attacker may be able to determine the legacy VNC password configured for Screen Sharing.
CVSS v3.1
Score 5.5medium
Affected software
Apple
macOS
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-43665 is a vulnerability in Apple macOS where a local attacker with low privileges could potentially discover the legacy VNC password used for Screen Sharing. The vulnerability arises from insufficient entitlement checks that allowed unauthorized access to this sensitive information. Apple fixed this issue by implementing additional entitlement checks in macOS Sequoia 15.7.8 and macOS Sonoma 14.8.8. The vulnerability does not require user interaction and impacts confidentiality but not integrity or availability.
Potential Impact
An attacker with local access and low privileges could obtain the legacy VNC password configured for Screen Sharing, potentially allowing unauthorized remote access if the legacy VNC service is enabled. This compromises confidentiality but does not affect system integrity or availability. There are no known exploits in the wild at this time.
Mitigation Recommendations
This vulnerability is fixed in macOS Sequoia 15.7.8 and macOS Sonoma 14.8.8 by adding additional entitlement checks. Users and administrators should update affected systems to these versions or later to remediate the issue. No other mitigations or temporary workarounds are indicated.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- apple
- Date Reserved
- 2026-05-01T22:46:21.640Z
- State
- PUBLISHED
Threat ID: 6a67c1b29c2644c7f8cb0dbf
Added to database: 07/27/2026, 20:38:10 UTC
Last enriched: 07/29/2026, 23:43:40 UTC
Last updated: 09/11/2026, 22:06:33 UTC
Views: 50
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