Vulnerability details
CVE-2026-65400
Actively exploited
Apple macOS
CVSS 3.1
9.8Critical
Official description
An authentication issue was addressed with improved state management. This issue is fixed in macOS Golden Gate 27, macOS Sequoia 15.7.9, macOS Sonoma 14.8.9, macOS Tahoe 26.6.1, macOS Tahoe 26.7. An attacker on the network may be able to authenticate to Screen Sharing without valid credentials.
CVSS scores
| Score | Version | Source | Vector |
|---|---|---|---|
| 9.8Critical | 3.1 | CISA ADP / Vulnrichment (CISA-ADP) | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
Affected products
| Vendor | Product | Versions | Source |
|---|---|---|---|
| Apple | macOS | v < 14.8.9 | CVEProject cvelistV5 (CNA) |
| Apple | macOS | v < 15.7.9 | CVEProject cvelistV5 (CNA) |
| Apple | macOS | v < 26.6.1 | CVEProject cvelistV5 (CNA) |
| Apple | macOS | v < 26.7 | CVEProject cvelistV5 (CNA) |
| Apple | macOS | v < 27 | CVEProject cvelistV5 (CNA) |
References and advisories
9- https://support.apple.com/en-us/148170
- https://support.apple.com/en-us/148171
- https://support.apple.com/en-us/148172
- https://support.apple.com/en-us/149035
- https://support.apple.com/en-us/149042
- https://advisories.ncsc.nl/2026/ncsc-2026-0280.html third-party-advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-65400 government-resource
- http://seclists.org/fulldisclosure/2026/Aug/36
- http://seclists.org/fulldisclosure/2026/Aug/37
Kolun on Telegram @kolunsec
Exploited CVEs, key news and a daily digest
Alerts for this product's next CVEsFollow the product to get new vulnerabilities on Telegram.
Details
- Published
- 2026-08-06
- Last updated
- 2026-10-27
- State
- Published
- Assigner (CNA)
- apple
- Kolun priority
- 89 · Critical
CISA KEV catalog
- Date added
- 2026-08-18
- Due date
- 2026-08-21
- Used in ransomware
- Unknown
Exploit prediction (EPSS)
18.05%
Probability of exploitation in 30 days
97.2%
Percentile (among all CVEs)
- 2026-11-1018.05%
- 2026-11-031.72%
SSVC assessment (CISA)
- Automatable
- Yes
- Exploitation
- Active
- Technical impact
- Total
Weaknesses (CWE)
- CWE-287Improper Authentication