CVE-2018-4407

HIGHNVD 8.89.0▲
EchelonGraph scoreHIGH confidence

Score elevated to 9.0 because EPSS predicts 91% probability of exploitation within the next 30 days (top 0.4% of all CVEs). NVD baseline CVSS 8.8 retained for reference. Confidence: see factors.

Triggered by: EPSS exploit prediction ≥85%
Sources: epss, ghsa, nvd
Elevated
8.8
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 22%CVSS: 8.8Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

A memory corruption issue was addressed with improved validation. This issue affected versions prior to iOS 12, macOS Mojave 10.14, tvOS 12, watchOS 5.

CVSS v3
8.8
EG Score
9.0(high)
EPSS
97.4%
KEV
Not listed

Published

April 3, 2019

Last Modified

November 21, 2024

References (12)

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 10× in last 7d / 42× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-07-06 16:25 UTCEPSS rescore
  2. 2026-07-06 16:24 UTCEPSS rescore
  3. 2026-07-06 02:20 UTCEPSS rescore
  4. 2026-07-05 02:27 UTCEPSS rescore
  5. 2026-07-04 06:28 UTCEPSS rescore
  6. 2026-07-04 06:28 UTCEPSS rescore
  7. 2026-07-01 15:03 UTCEPSS rescore
  8. 2026-07-01 15:03 UTCEPSS rescore
  9. 2026-06-30 23:20 UTCEPSS rescore
  10. 2026-06-30 23:20 UTCEPSS rescore
  11. 2026-06-29 14:03 UTCEPSS rescore
  12. 2026-06-28 14:04 UTCEPSS rescore
  13. 2026-06-28 04:53 UTCEPSS rescore
  14. 2026-06-28 04:53 UTCEPSS rescore
  15. 2026-06-27 03:06 UTCEPSS rescore
  16. 2026-06-27 03:06 UTCEPSS rescore
  17. 2026-06-25 13:47 UTCEPSS rescore
  18. 2026-06-25 13:47 UTCEPSS rescore
  19. 2026-06-24 14:02 UTCEPSS rescore
  20. 2026-06-24 14:02 UTCEPSS rescore
  21. 2026-06-23 21:30 UTCEPSS rescore
  22. 2026-06-23 21:30 UTCEPSS rescore
  23. 2026-06-22 14:23 UTCEPSS rescore
  24. 2026-06-22 14:23 UTCEPSS rescore
  25. 2026-06-21 01:57 UTCEPSS rescore
Show 28 more
  1. 2026-06-21 01:57 UTCEPSS rescore
  2. 2026-06-18 17:50 UTCEPSS rescore
  3. 2026-06-18 17:50 UTCEPSS rescore
  4. 2026-06-17 17:50 UTCEPSS rescore
  5. 2026-06-16 17:50 UTCEPSS rescore
  6. 2026-06-16 17:50 UTCEPSS rescore
  7. 2026-06-15 17:45 UTCEPSS rescore
  8. 2026-06-14 23:15 UTCEPSS rescore
  9. 2026-06-14 23:15 UTCEPSS rescore
  10. 2026-06-13 22:58 UTCEPSS rescore
  11. 2026-06-12 23:09 UTCEPSS rescore
  12. 2026-06-12 23:09 UTCEPSS rescore
  13. 2026-06-11 13:57 UTCEPSS rescore
  14. 2026-06-10 22:16 UTCEPSS rescore
  15. 2026-06-08 14:14 UTCEPSS rescore
  16. 2026-06-07 15:22 UTCEPSS rescore
  17. 2026-06-07 15:22 UTCEPSS rescore
  18. 2026-06-05 22:45 UTCEPSS rescore
  19. 2026-06-05 22:45 UTCEPSS rescore
  20. 2026-06-02 20:11 UTCEPSS rescore
  21. 2026-06-01 13:50 UTCEPSS rescore
  22. 2026-05-31 00:14 UTCEPSS rescore
  23. 2026-05-31 00:14 UTCEPSS rescore
  24. 2026-05-27 21:02 UTCEG score recompute
  25. 2026-05-27 21:02 UTCGHSA enrichment
  26. 2026-05-26 07:17 UTCEPSS rescore
  27. 2026-05-26 07:17 UTCEPSS rescore
  28. 2026-05-25 08:16 UTCOSV refresh

Publicly available exploits

(10 references)

Working exploit code is in the public domain (10 GitHub PoCs). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • GitHub PoCpwnhacker0x18/iOS-Kernel-Crash
    First seen Nov 12, 2019

    Exploit for CVE-2018-4407-Memory Corruption

    Open source ↗
  • GitHub PoCzeng9t/CVE-2018-4407-iOS-exploit
    First seen Dec 31, 2018

    CVE-2018-4407,iOS exploit

    Open source ↗
  • GitHub PoCanonymouz4/Apple-Remote-Crash-Tool-CVE-2018-4407
    First seen Nov 7, 2018

    Crashes any macOS High Sierra or iOS 11 device that is on the same WiFi network

    Open source ↗
  • GitHub PoCr3dxpl0it/CVE-2018-4407
    First seen Nov 4, 2018

    IOS/MAC Denial-Of-Service [POC/EXPLOIT FOR MASSIVE ATTACK TO IOS/MAC IN NETWORK]

    Open source ↗
  • GitHub PoCWyAtu/CVE-2018-4407
    First seen Nov 2, 2018

    CVE-2018-4407 IOS/macOS kernel crash

    Open source ↗
  • GitHub PoCfarisv/AppleDOS
    First seen Nov 2, 2018

    Messing Apple devices on the network with CVE-2018-4407 (heap overflow in bad packet handling)

    Open source ↗
  • GitHub PoCzteeed/CVE-2018-4407-IOS
    First seen Nov 2, 2018

    POC: Heap buffer overflow in the networking code in the XNU operating system kernel

    Open source ↗
  • GitHub PoCSamDecrock/node-cve-2018-4407
    First seen Nov 2, 2018

    Node.js PoC exploit code for CVE-2018-4407

    Open source ↗
  • GitHub PoCPa55w0rd/check_icmp_dos
    First seen Nov 1, 2018

    iOS 12 / OS X Remote Kernel Heap Overflow (CVE-2018-4407) POC

    Open source ↗
  • GitHub PoCunixpickle/cve-2018-4407
    First seen Nov 1, 2018

    Crash macOS and iOS devices with one packet

    Open source ↗

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2018-4407?
CVE-2018-4407 is a high vulnerability published on April 3, 2019. A memory corruption issue was addressed with improved validation. This issue affected versions prior to iOS 12, macOS Mojave 10.14, tvOS 12, watchOS 5.
When was CVE-2018-4407 disclosed?
CVE-2018-4407 was first published in the National Vulnerability Database on April 3, 2019, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2018-4407 actively exploited?
CVE-2018-4407 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 97.4% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2018-4407?
CVE-2018-4407 has a CVSS v3 base score of 8.8 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 9.0.
How do I remediate CVE-2018-4407?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2018-4407, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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