CVE-2021-30983
Apple iOS and iPadOS Buffer Overflow Vulnerability
Does this matter?
Known to be exploited in the wild (CISA KEV, CISA remediation deadline 18 July 2022). Treat as an emergency change: patch or isolate now, then hunt for prior compromise.
Description
A buffer overflow issue was addressed with improved memory handling. This issue is fixed in iOS 15.2 and iPadOS 15.2. An application may be able to execute arbitrary code with kernel privileges.
- CVSS 3.1
- 7.8 HIGHCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- EPSS
- 2.92% probability · 87th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Listed 27 June 2022 · due 18 July 2022
- Weakness
- CWE-120
- Affected
- apple/ipados · apple/iphone os
- Source
- product-security@apple.com
EPSS 2.9% since 30 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
CISA notes
Apply updates per vendor instructions. https://nvd.nist.gov/vuln/detail/CVE-2021-30983
References
- https://support.apple.com/en-us/HT212976Release Notes, Vendor Advisory
- https://support.apple.com/en-us/HT212976Release Notes, Vendor Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-30983US Government Resource
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.