{"id":"CVE-2026-84553","title":"A resource exhaustion issue was addressed with improved input validation","summary":"A resource exhaustion issue was addressed with improved input validation. This issue is fixed in macOS Golden Gate 27, macOS Sequoia 15.8, macOS Tahoe 26.7. A remote attacker may be able to cause a denial-of-service.","severity":"high","cvss":7.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","cwe":["CWE-400"],"vendor":"apple","product":"macos","affected":["macos >= 15.0, < 15.8","macos >= 26.0, < 26.7"],"patched":["macos 26.7"],"published":"2026-09-14","updated":"2026-09-15","sourceUpdated":"2026-09-15T17:39:16.710","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-84553","references":[{"url":"https://support.apple.com/en-us/149035","label":"product-security@apple.com"},{"url":"https://support.apple.com/en-us/149042","label":"product-security@apple.com"},{"url":"https://support.apple.com/en-us/149043","label":"product-security@apple.com"}],"tags":["nvd","cve.org"],"epss":0.00532,"epssPercentile":0.43878,"ssvc":{"exploitation":"none","automatable":"yes","technicalImpact":"partial","timestamp":"2026-09-14T23:03:26.714713Z"},"ingestedAt":"2026-09-14T21:15:17.490Z","slug":"CVE-2026-84553","body":"## Overview\n\nA resource exhaustion issue was addressed with improved input validation. This issue is fixed in macOS Golden Gate 27, macOS Sequoia 15.8, macOS Tahoe 26.7. A remote attacker may be able to cause a denial-of-service.\n\n## Affected\n\n- `macos >= 15.0, < 15.8`\n- `macos >= 26.0, < 26.7`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `macos 26.7`","depth":"twilight","depthScore":41,"depthScoreParts":{"impact":41.3,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[{"seq":203371,"id":"CVE-2026-84553","ts":1789427860280,"field":"cvss","old":null,"new":"7.5"},{"seq":203370,"id":"CVE-2026-84553","ts":1789427860280,"field":"severity","old":"none","new":"high"}]}