Apple iOS, iPadOS, macOS Use-After-Free Vulnerability

HOCH 8.8EXPLOITED (CISA KEV)CVE-2021-30858 · Published 24/08/2021 · updated 17/06/2026

Apple iOS, iPadOS, macOS Use-After-Free Vulnerability. Actively exploited: CISA added this vulnerability to its Known Exploited Vulnerabilities catalog on 03/11/2021. Patch affected systems as an emergency.

Kurz gesagt

CVE-2021-30858 ist eine Schwachstelle (HOCH (CVSS 8.8)).
Wird aktiv ausgenutzt: CISA hat sie am 03/11/2021 in den KEV-Katalog aufgenommen.
Wahrscheinlichkeit einer Ausnutzung in den nächsten 30 Tagen (EPSS): 13.4%, höher als bei 96.4% aller Schwachstellen.
Noch keine gepatchte Version bekannt: Herstellerhinweise unter Referenzen verfolgen.

Package	Affected versions	Patched versions
iOS, iPadOS, and macOS Apple	Versions not published yet (product named by CISA KEV)

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.

References

seclists.org/fulldisclosure/2021/Sep/25 · Mailing List
seclists.org/fulldisclosure/2021/Sep/27 · Mailing List
seclists.org/fulldisclosure/2021/Sep/29 · Mailing List
seclists.org/fulldisclosure/2021/Sep/38 · Mailing List
seclists.org/fulldisclosure/2021/Sep/39 · Mailing List
seclists.org/fulldisclosure/2021/Sep/50 · Mailing List
openwall.com/lists/oss-security/2021/09/20/1 · Mailing List
openwall.com/lists/oss-security/2021/10/26/9 · Mailing List
openwall.com/lists/oss-security/2021/10/27/1 · Mailing List
openwall.com/lists/oss-security/2021/10/27/2 · Mailing List
openwall.com/lists/oss-security/2021/10/27/4 · Mailing List
lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BO6DMTHZR57JDBOXPSNR2MKDMCRWV265

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