CVE-2026-43777: A remote attacker may be able to cause a denial of service in Apple macOS
This issue was addressed with improved input validation. This issue is fixed in macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, macOS Tahoe 26.6. A remote attacker may be able to cause a denial of service.
AI Analysis
Technical Summary
This vulnerability in Apple macOS involves insufficient input validation that could be exploited remotely to cause a denial of service (DoS) condition. The CVSS score of 7.5 indicates high severity with network attack vector, low attack complexity, no privileges or user interaction required, and impact limited to availability. Apple addressed the issue by improving input validation and released fixes in macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, and macOS Tahoe 26.6.
Potential Impact
A remote attacker can cause a denial of service on affected macOS systems, impacting system availability. There is no confidentiality or integrity impact reported. No known exploits are currently active in the wild.
Mitigation Recommendations
Apply the official patches provided by Apple in macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, and macOS Tahoe 26.6 to remediate this vulnerability. Since the vendor advisory confirms the issue is fixed in these versions, updating to these or later versions will mitigate the risk.
CVE-2026-43777: A remote attacker may be able to cause a denial of service in Apple macOS
Description
This issue was addressed with improved input validation. This issue is fixed in macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, macOS Tahoe 26.6. A remote attacker may be able to cause a denial of service.
CVSS v3.1
Score 7.5high
Affected software
Apple
macOS
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability in Apple macOS involves insufficient input validation that could be exploited remotely to cause a denial of service (DoS) condition. The CVSS score of 7.5 indicates high severity with network attack vector, low attack complexity, no privileges or user interaction required, and impact limited to availability. Apple addressed the issue by improving input validation and released fixes in macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, and macOS Tahoe 26.6.
Potential Impact
A remote attacker can cause a denial of service on affected macOS systems, impacting system availability. There is no confidentiality or integrity impact reported. No known exploits are currently active in the wild.
Mitigation Recommendations
Apply the official patches provided by Apple in macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, and macOS Tahoe 26.6 to remediate this vulnerability. Since the vendor advisory confirms the issue is fixed in these versions, updating to these or later versions will mitigate the risk.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- apple
- Date Reserved
- 2026-05-01T22:46:27.819Z
- State
- PUBLISHED
Threat ID: 6a67c1b99c2644c7f8cb1039
Added to database: 07/27/2026, 20:38:17 UTC
Last enriched: 07/29/2026, 23:45:17 UTC
Last updated: 09/11/2026, 22:06:33 UTC
Views: 46
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