CISA KEV · Known exploitedHigh

CVE-2021-30983

Apple iOS and iPadOS

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
7.8
EPSS
2.92%
85.7% percentile
CISA KEV
Listed
Published
2021.08.25
PRIORITY ASSESSMENT

Immediate review

CISA has listed this vulnerability in the Known Exploited Vulnerabilities catalog.

Known exploitationConfirmed by CISA KEV
Exploit probability2.92%
Technical severityCVSS 7.8

Vulnerability overview

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.

Affected product and versions

Product
Apple iOS and iPadOS
Affected versions
unspecified, < 15.2
Fixed versions
15.2

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide
CISA required action

Apply updates per vendor instructions.

Due date: 2022.07.18
  1. 1
    Identify

    Confirm that Apple iOS and iPadOS and an affected version are present.

  2. 2
    Prioritize

    Combine exploitation signals with asset exposure and business criticality.

  3. 3
    Remediate

    Follow the vendor advisory or supported update path and preserve rollback options.

  4. 4
    Verify

    Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CWE
CWE-119, CWE-120
KEV added
2022.06.27
Ransomware use
미확인
CVE-2021-30983 — Apple iOS and iPadOS | SECUFOCUS NOW