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CVE-2020-3840An off by one issue existed in the handling of racoon configuration files. This issue was addressed through improved bounds checking. This…

Description

An off by one issue existed in the handling of racoon configuration files. This issue was addressed through improved bounds checking. This issue is fixed in iOS 13.3.1 and iPadOS 13.3.1, macOS Catalina 10.15.3, tvOS 13.3.1. Loading a maliciously crafted racoon configuration file may lead to arbitrary code execution.

Timeline

  1. ID reserved

    By apple

  2. · 2 months later

    Published

  3. · 4 years later

    Record updated

Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.

Scores

CVSS scores of CVE-2020-3840, by who scored it
Scored byCVSSScoreVector
NVDNVD · Modified3.1High7.8CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS (exploitation in 30 days)
1.1% · top 33% of all CVEs (12 Nov 2026)
Loading the EPSS history…

The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.8.

Affected products

  • Apple · iOS

    • affected unspecified – < iOS 13.3.1 and iPadOS 13.3.1

  • Apple · macOS

    • affected unspecified – < macOS Catalina 10.15.3

  • Apple · tvOS

    • affected unspecified – < tvOS 13.3.1

References

References3

Sources

The same CVE in the primary databases and aggregators, to check against.

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Record last updated .