{"id":"CVE-2026-43815","title":"A buffer overflow was addressed with improved bounds checking","summary":"A buffer overflow was addressed with improved bounds checking. This issue is fixed in macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, macOS Tahoe 26.6. Connecting to a malicious afpfs server may lead to kernel memory corruption.","severity":"high","cvss":8.8,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","cwe":["CWE-787"],"vendor":"apple","product":"macos","affected":["macos >= 14.0, < 14.8.8","macos >= 15.0, < 15.7.8","macos >= 26.0, < 26.6"],"patched":["macos 26.6"],"published":"2026-09-14","updated":"2026-09-18","sourceUpdated":"2026-09-18T04:17:49.960","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-43815","references":[{"url":"https://support.apple.com/en-us/128067","label":"product-security@apple.com"},{"url":"https://support.apple.com/en-us/128071","label":"product-security@apple.com"},{"url":"https://support.apple.com/en-us/128072","label":"product-security@apple.com"}],"tags":["nvd","cve.org"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"total","timestamp":"2026-09-17T17:14:44.342559Z"},"epss":0.00439,"epssPercentile":0.37589,"ingestedAt":"2026-09-14T21:15:17.502Z","slug":"CVE-2026-43815","body":"## Overview\n\nA buffer overflow was addressed with improved bounds checking. This issue is fixed in macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, macOS Tahoe 26.6. Connecting to a malicious afpfs server may lead to kernel memory corruption.\n\n## Affected\n\n- `macos >= 14.0, < 14.8.8`\n- `macos >= 15.0, < 15.7.8`\n- `macos >= 26.0, < 26.6`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `macos 26.6`","depth":"twilight","depthScore":48,"depthScoreParts":{"impact":48.4,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[{"seq":205600,"id":"CVE-2026-43815","ts":1789581712494,"field":"cvss","old":null,"new":"8.8"},{"seq":205599,"id":"CVE-2026-43815","ts":1789581712494,"field":"severity","old":"none","new":"high"}]}