CVE-2020-3840 json
An off by one issue existed in the handling of racoon configuration files.
published 2020-02-27 6 y ago modified 2026-06-17 4 mo ago also EUVD-2020-25105
- cvss
- 7.8
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.1%
- EPSS 1.1% chance of exploitation in 30 days, percentile 66%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- Apple iOS iOS 13.3.1 and iPadOS 13.3.1
- Apple macOS macOS Catalina 10.15.3
- Apple tvOS tvOS 13.3.1
Exploit prediction
1.14% chance of exploitation in the next 30 days, higher than 66% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 7.8 | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 6.8 | AV:N/AC:M/Au:N/C:P/I:P/A:P |
Affected products
- Apple iOS
- Apple macOS
- Apple tvOS
Classification
References
-
support.apple.com
/HT210919
release-notes, vendor-advisory
-
support.apple.com
/HT210918
release-notes, vendor-advisory
-
support.apple.com
/HT210920
release-notes, vendor-advisory
Sources
- CVE List CVE-2020-3840
- NVD CVE-2020-3840
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.