peter bassill · operator
$ cve CVE-2021-30858 JSON

CVE-2021-30858 KEV

8.8
HIGH · CVSS 3.1 · EPSS 13.4% (pctl 96)

Patch first

On CISA KEV — known exploited in the wild, due 2021-11-17.

Description

A use after free issue was addressed with improved memory management. This issue is fixed in iOS 14.8 and iPadOS 14.8, macOS Big Sur 11.6. Processing maliciously crafted web content may lead to arbitrary code execution. Apple is aware of a report that this issue may have been actively exploited.

Scoring

CVSS8.8 (HIGH, v3.1)
VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS13.38% — more likely to be exploited than 96% of all CVEs
WeaknessCWE-416
On CISA KEVyes — remediate by 2021-11-17
Public exploitnone known
Published2021-08-24
Last modified2026-06-17

CISA KEV

NameApple iOS, iPadOS, macOS Use-After-Free Vulnerability
Added2021-11-03
Due2021-11-17
Vendor / productApple / iOS, iPadOS, and macOS
Ransomware usenone reported

Affected (5)

VendorProduct
appleipados
appleiphone os
applemacos
debiandebian linux
fedoraprojectfedora

References

→ the Explorer  ·  watch your stack  ·  NVD