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PatchSiren cyber security CVE debrief

CVE-2021-1782 Apple CVE debrief

CVE-2021-1782 is an Apple multiple-products race condition vulnerability that CISA added to its Known Exploited Vulnerabilities catalog on 2021-11-03. Because it is in KEV, defenders should treat it as a priority patching item and follow Apple’s update guidance as soon as possible.

Vendor
Apple
Product
Multiple Products
CVSS
Unknown
CISA KEV
Listed
Original CVE published
2021-11-03
Original CVE updated
2021-11-03
Advisory published
2021-11-03
Advisory updated
2021-11-03

Who should care

Organizations and individuals that manage or use Apple devices should care, especially endpoint, IT, and security teams responsible for patching and vulnerability response.

Technical summary

The supplied corpus identifies the issue as a race condition vulnerability affecting Apple multiple products. No further technical detail, affected-version list, or exploitation mechanism is provided in the supplied sources. The key defensive signal is that CISA lists CVE-2021-1782 in KEV and directs organizations to apply updates per vendor instructions.

Defensive priority

High. CISA placed this vulnerability in the Known Exploited Vulnerabilities catalog, which is a strong indicator to prioritize remediation over routine patch queues.

Recommended defensive actions

  • Apply Apple updates per vendor instructions as soon as possible.
  • Use asset inventory to identify Apple systems that may be exposed to the issue.
  • Prioritize remediation on managed endpoints and other Apple devices that are critical to business operations.
  • Track the CISA KEV catalog and confirm the CVE is remediated across the fleet.
  • Validate patch deployment and document closure for compliance and response tracking.

Evidence notes

The supplied CISA KEV record names the vulnerability as "Apple Multiple Products Race Condition Vulnerability," marks it as a known exploited vulnerability, and gives the required action "Apply updates per vendor instructions." The record dates are 2021-11-03 for both publication and KEV addition, matching the supplied CVE timeline. No CVSS score or affected-product/version details were included in the supplied corpus.

Official resources

CVE-2021-1782 was published on 2021-11-03 and added to CISA’s Known Exploited Vulnerabilities catalog the same day. The supplied sources do not provide a CVSS score or detailed affected-version information.