CVE-2026-43728: An attacker may be able to modify the state of the Keychain in Apple macOS
This issue was addressed through improved state management. This issue is fixed in macOS Tahoe 26.6. An attacker may be able to modify the state of the Keychain.
AI Analysis
Technical Summary
This vulnerability (CVE-2026-43728) in Apple macOS involves a flaw in the state management of the Keychain, potentially allowing an attacker to modify its state. The issue is classified under CWE-362 (Race Condition). The vendor fixed the issue in macOS Tahoe 26.6 by improving state management. No known exploits are reported in the wild. The CVSS v3.1 score is 7.5 with vector AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N, indicating network attack vector, low attack complexity, no privileges or user interaction required, unchanged scope, no confidentiality impact, high integrity impact, and no availability impact.
Potential Impact
An attacker can modify the integrity of the Keychain state on affected macOS systems, potentially leading to unauthorized changes in stored credentials or security settings. There is no reported impact on confidentiality or availability. The vulnerability could be exploited remotely without privileges or user interaction.
Mitigation Recommendations
This issue is fixed in macOS Tahoe 26.6. Users and administrators should update to macOS Tahoe 26.6 or later to remediate this vulnerability. Patch status is confirmed by the vendor advisory indicating the fix in this version. No additional mitigation steps are specified.
CVE-2026-43728: An attacker may be able to modify the state of the Keychain in Apple macOS
Description
This issue was addressed through improved state management. This issue is fixed in macOS Tahoe 26.6. An attacker may be able to modify the state of the Keychain.
CVSS v3.1
Score 7.5high
Affected software
Apple
macOS
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-43728) in Apple macOS involves a flaw in the state management of the Keychain, potentially allowing an attacker to modify its state. The issue is classified under CWE-362 (Race Condition). The vendor fixed the issue in macOS Tahoe 26.6 by improving state management. No known exploits are reported in the wild. The CVSS v3.1 score is 7.5 with vector AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N, indicating network attack vector, low attack complexity, no privileges or user interaction required, unchanged scope, no confidentiality impact, high integrity impact, and no availability impact.
Potential Impact
An attacker can modify the integrity of the Keychain state on affected macOS systems, potentially leading to unauthorized changes in stored credentials or security settings. There is no reported impact on confidentiality or availability. The vulnerability could be exploited remotely without privileges or user interaction.
Mitigation Recommendations
This issue is fixed in macOS Tahoe 26.6. Users and administrators should update to macOS Tahoe 26.6 or later to remediate this vulnerability. Patch status is confirmed by the vendor advisory indicating the fix in this version. No additional mitigation steps are specified.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- apple
- Date Reserved
- 2026-05-01T22:46:21.645Z
- State
- PUBLISHED
Threat ID: 6a67c1b59c2644c7f8cb0e54
Added to database: 07/27/2026, 20:38:13 UTC
Last enriched: 07/29/2026, 23:28:28 UTC
Last updated: 09/10/2026, 20:02:16 UTC
Views: 45
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