CVE-2020-3878

mediumpriority · track · 34EPSS 0.094 · 95 %ileEUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

9.45% (95th) EPSS

CVSS 6.8 · medium

Is it mine?

19 products

Check your exposure

Who says so?

3 sources

cnnvd · enisa_euvd · nvd

EPSS · scored 2026-10-27

An out-of-bounds read was addressed with improved input validation. This issue is fixed in iOS 13.5 and iPadOS 13.5, macOS Catalina 10.15.5, tvOS 13.4.5, watchOS 6.2.5, iTunes 12.10.7 for Windows, iCloud for Windows 11.2, iCloud for Windows 7.19. Processing a maliciously crafted image may lead to arbitrary code execution.

cvss

Technical severity, 0–10. One row per scoring source.

7.8

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 6.8–7.8

v2.06.8mediumAV:N/AC:M/Au:N/C:P/I:P/A:Pprimary · NVD / NIST USexploitability 8.6 · impact 6.4

v3.17.8highCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:Hprimary · NVD / NIST USexploitability 1.8 · impact 5.9

v3.17.1highCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:Usecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-125USprimary

affected products (19)

Products and version ranges known to be affected.

Apple IOSunspecified → iOS 13.5 and iPadOS 13.5enisa_euvdEU
Apple iCloud for Windowsunspecified → iCloud for Windows 11.2enisa_euvdEU
Apple iCloud for Windows (Legacy)unspecified → iCloud for Windows 7.19enisa_euvdEU
Apple iTunes for Windowsunspecified → iTunes 12.10.7 for Windowsenisa_euvdEU
Apple macOSunspecified → macOS Catalina 10.15.5enisa_euvdEU
Apple tvOSunspecified → tvOS 13.4.5enisa_euvdEU
Apple watchOSunspecified → watchOS 6.2.5enisa_euvdEU
apple icloud< 7.19nvdUScpe:2.3:a:apple:icloud:*:*:*:*:*:*:*:*
apple icloud11.0 → 11.2nvdUScpe:2.3:a:apple:icloud:*:*:*:*:*:*:*:*
apple ipados< 13.5nvdUScpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:*
apple iphone os< 13.5nvdUScpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*
apple itunes< 12.10.7nvdUScpe:2.3:a:apple:itunes:*:*:*:*:*:*:*:*
apple mac os x10.13 → 10.13.6nvdUScpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:*
apple mac os x= 10.13.6nvdUScpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:*
apple mac os x10.14 → 10.14.6nvdUScpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:*
apple mac os x= 10.14.6nvdUScpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:*
apple mac os x10.15 → 10.15.5nvdUScpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:*
apple tvos< 13.4.5nvdUScpe:2.3:o:apple:tvos:*:*:*:*:*:*:*:*
apple watchos< 6.2.5nvdUScpe:2.3:o:apple:watchos:*:*:*:*:*:*:*:*

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd nvd NVD CVE.org MITRE

published 2020-02-27modified 2026-06-17

related (11,872)

Related entries.

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+11867 more

references (51)

External citations — patches, advisories, analysis.

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