HOMEVULNERABILITIESCVE-2021-30983
HIGHCISA KEVIN THE WILD

CVE-2021-30983

Published: June 27, 2022

EPSS:0.68%probability of exploitation in 30 daysPercentile:71.2th

Official Description

Apple iOS and iPadOS contain a buffer overflow vulnerability that could allow an application to execute code with kernel privileges.

NVD Source

CISA KEV Advisory

Apple iOS and iPadOS Buffer Overflow Vulnerability

Apple iOS and iPadOS contain a buffer overflow vulnerability that could allow an application to execute code with kernel privileges.

Added to KEV: 2022-06-27Federal patch deadline: 2022-07-18
Required Action (CISA)

Apply updates per vendor instructions.

Risk Analysis

This buffer overflow vulnerability in Apple iOS and iPadOS could allow an application to execute code with kernel privileges. Its inclusion in CISA's KEV catalog and active exploitation in the wild highlight its critical nature, despite a low EPSS score indicating a lower overall exploitation probability across all internet-facing systems. Successful exploitation grants an attacker full control over the affected device.

This vulnerability is actively exploited in the wild, as confirmed by its inclusion in CISA's KEV catalog. Exploitation allows an application to execute code with kernel privileges.

Recommended Action

Apply the latest security updates from Apple for iOS and iPadOS. Ensure all applications are from trusted sources and regularly review app permissions.

Generated by the CTIWATCH analysis pipeline from this CVE's metadata (CVSS, EPSS, KEV status, exploit intelligence). Verify against vendor advisories before acting.

Technical Analysis

CVE-2021-30983 requires local access, meaning attackers must already have a foothold on the target system.

Exploitation requires some privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

CISA has added CVE-2021-30983 to the Known Exploited Vulnerabilities (KEV) catalog, confirming active exploitation in the wild. U.S. federal agencies are required to patch this within the mandated timeframe, and all organizations should treat remediation as urgent.

Affected Vendors & Products

Mentioned vendors (from description):
Apple
CPE data not yet available in NVD for this CVE.

Exploit & PoC Resources

ACTIVE EXPLOITATIONConfirmed exploitation in the wild
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All References (1)

Quick Facts

CVE IDCVE-2021-30983
SeverityHIGH
CISA KEVYES — Active Exploitation
ExploitIN THE WILD
EPSS (30d)0.68%
PublishedJun 27, 2022

Recommended Actions

  • Apply vendor patches immediately
  • Monitor CVE-2021-30983 in threat intel feeds
  • Review IDS/IPS signatures for exploitation attempts
  • !CISA KEV: Federal agencies must patch per BOD 22-01 timeline
  • !Active exploitation confirmed — treat as P1
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.