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CVE Record

CVE-2020-29617: An out-of-bounds read was addressed with improved input validation.

An out-of-bounds read was addressed with improved input validation. This issue is fixed in tvOS 14.3, macOS Big Sur 11.1, Security Update 2020-001 Catalina, Security Update 2020-007 Mojave, iOS 14.3 and iPadOS 14.3, iCloud for Windows 12.0, watchOS 7.2. Processing a maliciously crafted image may lead to heap corruption.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysismoderate

Security readout for executives and security teams

Plain-English summary

Apple fixed a flaw in image processing where a maliciously crafted image could cause heap corruption. Business risk comes from user devices and Macs processing untrusted images before the listed Apple updates. The source bundle does not provide CVSS, exact vulnerable versions, or evidence of active exploitation.

Executive priority

Treat as a routine but important patch-management item for Apple fleets. Prioritize systems that handle external images, unmanaged endpoints, and older macOS versions because the impact includes heap corruption, but active exploitation is not evidenced in the provided sources.

Technical view

CVE-2020-29617 is an out-of-bounds read addressed by improved input validation. Apple states that processing a maliciously crafted image may lead to heap corruption. Fixed releases include iOS/iPadOS 14.3, macOS Big Sur 11.1, Catalina Security Update 2020-001, Mojave Security Update 2020-007, tvOS 14.3, watchOS 7.2, and iCloud for Windows 12.0.

Likely exposure

Organizations with unmanaged or legacy Apple endpoints, Apple TV, Apple Watch, or iCloud for Windows installations below the fixed releases may be exposed. Exact vulnerable version ranges are not provided in the source bundle.

Exploitation context

The cited sources describe exploitation through processing a maliciously crafted image. The bundle marks CISA KEV as false and provides no cited evidence of active exploitation or public exploit use.

Researcher notes

Evidence is limited to Apple and CVE records. No CVSS, CWE, component name, vulnerable version range, exploit status, or detailed root cause is included. Avoid assuming code execution or active exploitation without additional vendor or threat intelligence sources.

Mitigation direction

  • Update iOS and iPadOS devices to 14.3 or later supported releases.
  • Update macOS Big Sur to 11.1 or apply the listed Catalina or Mojave Security Update.
  • Update tvOS to 14.3 and watchOS to 7.2 where applicable.
  • Update iCloud for Windows to 12.0 or later supported releases.
  • Check Apple guidance for any platform-specific replacement advisories.

Validation and detection

  • Inventory Apple endpoints and iCloud for Windows installations.
  • Compare installed versions against the fixed releases named by Apple.
  • Confirm MDM, patch management, or endpoint telemetry shows successful update installation.
  • Review asset exceptions for unsupported or unmanaged Apple devices.
Prepared
Confidence
medium
Sources
7

Public sources used

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.

ATT&CK lookup starting points

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CVE-2020-29617 mapping review

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Vulnerability profileCVE Program record
Severity
Unknown
CVSS
Not scored
Known Exploited
No
Published
Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

0CVSS vectors
0Timeline events
0ADP providers
6Source links

CVSS and timeline data

No CVSS vectors or timeline events were available in the normalized CVE source material.

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
AppleiOS and iPadOSunspecifiedListed
AppletvOSunspecifiedListed
ApplewatchOSunspecifiedListed
ApplemacOSunspecifiedListed
ApplemacOSunspecifiedListed
Weakness

CWE details

No CWE listed

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.