Improper certificate validation in Apple Security
Priority LOW 28CWE-295Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- High
- Impact type
- Spoofing
- Confidentiality · integrity · availability
- None · High · None
- Fix status
- No fix listed
Attack profile from CVSS 3.0 · NVD. Fix status from CNA. Impact type from CWE-295.
Summary
An issue was discovered in certain Apple products. iOS before 11.2.5 is affected. macOS before 10.13.3 is affected. tvOS before 11.2.5 is affected. watchOS before 4.2.2 is affected. The issue involves the "Security" component. It allows remote attackers to spoof certificate validation via crafted name constraints.
Why it matters now
EPSS 0.00927 60th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 4
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:apple:apple_tv:*:*:*:*:*:*:*:* | before 11.2.5 | Vulnerable | Apple |
| cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:* | before 11.2.5 | Vulnerable | Apple |
| cpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:* | before 10.13.3 | Vulnerable | Apple |
| cpe:2.3:o:apple:watchos:*:*:*:*:*:*:*:* | before 4.2.2 | Vulnerable | Apple |
- cpe:2.3:a:apple:apple_tv:*:*:*:*:*:*:*:* Versions before 11.2.5 Vulnerable ·Apple
- cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:* Versions before 11.2.5 Vulnerable ·Apple
- cpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:* Versions before 10.13.3 Vulnerable ·Apple
- cpe:2.3:o:apple:watchos:*:*:*:*:*:*:*:* Versions before 4.2.2 Vulnerable ·Apple
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2018-4086
- 2026-10-03 Alias added: GHSA-qcgf-5889-9273
References
More Apple Tv vulnerabilities
- TI-2018-03197 Memory corruption in Apple Kernel CVSS 3.0HIGH 7.8
- TI-2018-03047 Memory corruption in Apple WebKit CVSS 3.0HIGH 8.8
- TI-2017-01643 Memory corruption in Apple WebKit CVSS 3.0HIGH 8.8
- TI-2018-03248 In macOS High Sierra before 10.13.3, Security Update 2018-001 Sierra, and Security Update… CVSS 3.0CRITICAL 9.8
- TI-2018-03195 Memory corruption in Apple Kernel CVSS 3.0HIGH 7.8
- TI-2018-03144 In iOS before 11.2.5, macOS High Sierra before 10.13.3, Security Update 2018-001 Sierra… CVSS 3.0CRITICAL 9.8
Sources
- CVE-2018-4086 · CVE Program
- CVE-2018-4086 · NVD
- FIRST EPSS
- GHSA-qcgf-5889-9273 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences