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PatchSiren cyber security CVE debrief

CVE-2020-27950 Apple CVE debrief

CVE-2020-27950 is an Apple multiple-products memory initialization vulnerability that CISA has listed in its Known Exploited Vulnerabilities catalog. Because it is flagged as known exploited, organizations should treat it as a high-priority patching item and follow vendor update guidance without delay.

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

Security teams, Apple device administrators, endpoint management teams, and help desks supporting macOS, iOS, or other Apple-managed fleets should prioritize this CVE. Any organization with Apple products in production should confirm remediation status and patch compliance.

Technical summary

The available source material identifies the issue as a memory initialization vulnerability in Apple multiple products, but does not provide deeper technical detail in the supplied corpus. CISA’s KEV listing indicates the vulnerability was known to be exploited and directs defenders to apply updates per vendor instructions.

Defensive priority

High. CISA placed this CVE in the Known Exploited Vulnerabilities catalog, which makes timely remediation a priority. The KEV record shows a due date of 2022-05-03, so this item should be considered overdue unless already remediated.

Recommended defensive actions

  • Apply Apple updates per vendor instructions.
  • Inventory Apple products across the environment to confirm exposure and patch status.
  • Verify remediation on managed devices rather than relying on deployment completion alone.
  • Prioritize systems that are externally reachable or operationally critical.
  • Track CISA KEV catalog updates for any status changes or related Apple entries.

Evidence notes

This debrief is based on the supplied CISA KEV record and the official linked resources for CVE-2020-27950. The source corpus identifies Apple as the vendor, multiple products as the affected scope, and the vulnerability as a memory initialization issue. CISA metadata lists the CVE as known exploited, with dateAdded 2021-11-03 and dueDate 2022-05-03. No CVSS score was provided in the supplied data.

Official resources

CISA KEV lists CVE-2020-27950 as known exploited. The supplied timeline shows it was added on 2021-11-03 with a remediation due date of 2022-05-03.