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PatchSiren cyber security CVE debrief

CVE-2021-30883 Apple CVE debrief

CVE-2021-30883 is an Apple memory corruption vulnerability affecting multiple products and is listed in CISA’s Known Exploited Vulnerabilities catalog. Because CISA marked it as known exploited, defenders should treat remediation as urgent and follow vendor update guidance without delay.

Vendor
Apple
Product
Multiple Products
CVSS
Unknown
CISA KEV
Listed
Original CVE published
2022-05-23
Original CVE updated
2022-05-23
Advisory published
2022-05-23
Advisory updated
2022-05-23

Who should care

Apple device administrators, endpoint and vulnerability management teams, managed service providers, and security teams responsible for macOS, iOS, iPadOS, and other Apple-managed fleets should prioritize this issue.

Technical summary

The supplied corpus identifies the issue as a memory corruption vulnerability in Apple Multiple Products. The available source material does not provide component-level technical details, impact specifics, or a CVSS score. CISA’s KEV entry confirms the vulnerability is known exploited and directs organizations to apply updates per vendor instructions.

Defensive priority

High. CISA has placed this CVE in the Known Exploited Vulnerabilities catalog, which indicates immediate remediation should be prioritized over routine patch cycles.

Recommended defensive actions

  • Apply Apple updates according to vendor instructions as soon as possible.
  • Inventory Apple endpoints and identify any systems that may be exposed to the vulnerable software.
  • Prioritize remediation on internet-facing, high-value, and user-critical devices first.
  • Verify patch deployment and confirm affected systems are no longer vulnerable.
  • Track the KEV due date and document remediation status for risk acceptance or escalation purposes.

Evidence notes

Evidence is limited to the supplied CISA KEV record and the referenced official vulnerability listings. The source corpus identifies the vulnerability as an Apple Multiple Products memory corruption issue, notes that it is known exploited, and states the required action is to apply updates per vendor instructions. No CVSS score or deeper technical breakdown was included in the supplied material.

Sources and references

Verified primary and authoritative sources

  • CVE-2021-30883 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2021-30883

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2021-30883 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2021-30883

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

  • CISA Known Exploited Vulnerabilities catalog

    Publisher, destination, and source semantics verified

    URL: https://www.cisa.gov/known-exploited-vulnerabilities-catalog

    Cybersecurity and Infrastructure Security Agency - Official CISA catalog of vulnerabilities known to be exploited in the wild.

Supplemental references

  • Source item URL

    Unverified legacy reference

    URL: https://www.cisa.gov/sites/default/files/feeds/known_exploited_vulnerabilities.json

    cisa_kev

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.