What’s Vulnerable › Vulnerabilities

CVE-2017-13908

• Severity: high (CVSS 7.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2021-12-23 · updated 2026-06-17

Description

An issue in handling file permissions was addressed with improved validation. This issue is fixed in macOS High Sierra 10.13.1, Security Update 2017-001 Sierra, and Security Update 2017-004 El Capitan, macOS High Sierra 10.13. A local attacker may be able to execute non-executable text files via an SMB share.

Affected products

• macOS: from 10.11 before 10.11.6; from 10.12 through 10.12.5; 10.11.6, 10.11.6-security_update_2016-001, 10.11.6-security_update_2016-002, 10.11.6-security_update_2016-003, 10.11.6-security_update_2017-001, 10.11.6-security_update_2017-002 (+1) — fixed in 10.11.6

How to fix

Upgrade to a fixed version: macOS 10.11.6. Check the vendor advisory for mitigations.

References

• https://support.apple.com/en-us/HT208144
• https://support.apple.com/en-us/HT208221
• https://support.apple.com/en-us/HT208144
• https://support.apple.com/en-us/HT208221

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