What’s Vulnerable › Vulnerabilities

CVE-2018-4281

• Severity: critical (CVSS 9.8 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.0% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2019-01-11 · updated 2026-06-17
• Weakness: CWE-119

Description

In SwiftNIO before 1.8.0, a buffer overflow was addressed with improved size validation.

Affected products

• Swift Project SwiftNIO: before 1.8.0 — fixed in 1.8.0

How to fix

Upgrade to a fixed version: Swift Project SwiftNIO 1.8.0. Check the vendor advisory for mitigations.

References

• https://support.apple.com/HT208921
• https://support.apple.com/HT208921

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