01 Record

CVE-2021-30883

A memory corruption issue was addressed with improved memory handling. This issue is fixed in iOS 15.0.2 and iPadOS 15.0.2, macOS Monterey 12.0.1, iOS 14.8.1 and iPadOS 14.8.1, tvOS 15.1, watchOS 8.1,

HighKEVPUBLISHEDCNA: apple

CNA base score7.8 CVSS v3.xCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

View raw JSON

02 Description

03 Exploitation and scoring

Exploitation

Exploited in the wild. Listed in the CISA Known Exploited Vulnerabilities catalog on 2022-05-23. Federal remediation due 2022-06-13.

SSVC decision

ExploitationactiveCISA reports credible evidence of active exploitation.
AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
Technical ImpacttotalSuccessful exploitation gives total control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

14.72% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 96.3% of scored records. A rank, not a probability.

NVD base score

7.8 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

NVD analysis status

Analyzed. NVD last modified this record on 2026-06-17.

Red Hat severity

No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published

2021-08-24 18:49Z5 YR AGO

Last updated

2025-10-21 23:25Z1 YR AGO

Reserved

2021-04-13

Assigning CNA

apple

Record state

PUBLISHED

Severity

High (CVSS 7.8)

CNA CVSS vector

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Weaknesses

CWE-787Out-of-bounds WriteBase

Data version

5.1

Document digest

7870112c7a4c4f7bc2edadf605092ed28b1a719571d8610b93a49ea313c3590b

05 Affected products

VendorProductVersionsPlatforms

AppleiOS and iPadOS< 15.0, < 14.8—

ApplemacOS< 12.0, < 11.6, < 8.1, < 15.1—

06 References

support.apple.comhttps://support.apple.com/en-us/HT212869x_refsource_MISC
support.apple.comhttps://support.apple.com/en-us/HT212872x_refsource_MISC
support.apple.comhttps://support.apple.com/en-us/HT212846x_refsource_MISC
support.apple.comhttps://support.apple.com/en-us/HT212868x_refsource_MISC
support.apple.comhttps://support.apple.com/en-us/HT212874x_refsource_MISC
support.apple.comhttps://support.apple.com/en-us/HT212876x_refsource_MISC
www.cisa.govhttps://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-30883government-resource