CVE-2026-43777

CVE Enrichment

CVSS: 7.5 HIGH
EPSS: 0.70%
EPSS Percentile: 51.76%
CISA KEV: Not listed

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.

Technical Details

CVSS Version: 3.1
CNA / NVD Source: product-security@apple.com
Published: 28-Jul-2026 04:17
Last Modified: 29-Jul-2026 00:59
EPSS Date: 2026-10-11
CWE: CWE-20

CVSS Vector


            CVSS:3.1                            AV:N /
                            AC:L /
                            PR:N /
                            UI:N /
                            S:U /
                            C:N /
                            I:N /
                            A:H

Affected Products / Versions

apple / macos
Version / affected range: * · from (inclusive) 14.0 · before (exclusive) 14.8.8
cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*
apple / macos
Version / affected range: * · from (inclusive) 15.0 · before (exclusive) 15.7.8
cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*
apple / macos
Version / affected range: * · from (inclusive) 26.0 · before (exclusive) 26.6
cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*

References

Last enrichment sync: 12-Oct-2026 19:42
Sources: NVD · FIRST EPSS · CISA KEV
Latest successful provider update; providers refresh independently.

Reported Context (1)

It contained three screen sharing Server entries on Tahoe, including CVE-2026-43760 and CVE-2026-43777, which Apple described only as a remotely triggerable denial of service fixed through improved input validation. macOS Screen Sharing Flaws Enabled Pre-Auth Root Access; CVE-2026-65400 Exploited

CVE (2)

Malware (1)

People (4)

MITRE ATT&CK (6)

Vendors (2)

Products (3)

Tools (1)

Countries (1)

Note: Related entities, including threat actors, malware, CVEs, MITRE ATT&CK techniques, vendors, products, tools, countries, and industries, are shown when they appear in the same reporting. Their presence does not necessarily mean they were targeted, compromised, vulnerable, responsible for the activity, or directly involved in the incident.