CVE-2020-3890

Disclosure of deleted groups via incomplete deletion

Published Apr 1, 2020 · Updated Aug 4, 2024

Information disclosure in Messages Composition in Apple iOS before 13.4 allows attackers to view deleted message groups in autocomplete. Messages Composition incompletely deletes group entries used by autocomplete, leaving deleted groups eligible for later suggestions. The disclosure requires a device containing deleted message groups; Apple has not published the access precondition or underlying code locus.

CVSS severity5.3
Medium
EPSS probability0.80%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Information disclosure in Messages Composition in Apple iOS before 13.4 allows attackers to view deleted message groups in autocomplete. Messages Composition incompletely deletes group entries used by autocomplete, leaving deleted groups eligible for later suggestions. The disclosure requires a device containing deleted message groups; Apple has not published the access precondition or underlying code locus.

The record

CVE
CVE-2020-3890
Published
Apr 1, 2020
Updated
Aug 4, 2024
Vendor
Apple
Product
iOS
Classifications
CWE-668
Attack vector
Unavailable
Privileges
Unavailable

Timeline

How it unfolded

  1. Apr 1, 2020CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=unspecified <iOS 13.4 and iPadOS 13.4

What conditions does exploitation require?

Attack vectorUnavailable in this record.
Required privilegesUnavailable in this record.

What is affected?

Apple · iOSversion=unspecified <iOS 13.4 and iPadOS 13.4

Published CVSS scores

5.3NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
VectorUnavailable
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-668Exposure of Resource to Wrong Sphere

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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