CVE-2021-1817 is a memory corruption vulnerability affecting Apple's macOS, iOS, iPadOS, watchOS, and tvOS. This flaw, addressed through improved state management, can lead to arbitrary code execution if a user processes maliciously crafted web content. With a CVSS score of 8.8 (HIGH), it presents a significant risk due to its network-based attack vector, low attack complexity, and high impact on confidentiality, integrity, and availability. While no public exploit code (Metasploit, Nuclei, ExploitDB) or active exploitation (KEV) has been observed, and community discussion and media coverage are minimal, the vulnerability's high severity warrants prompt patching.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
< 14.5CPE matchmatch criteria | cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:* | ||
< 14.5CPE matchmatch criteria | cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:* | ||
>= 11.0, < 11.3CPE matchmatch criteria | cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:* | ||
< 14.5CPE matchmatch criteria | cpe:2.3:o:apple:tvos:*:*:*:*:*:*:*:* | ||
< 7.4CPE matchmatch criteria | cpe:2.3:o:apple:watchos:*:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.1 Security Researcher mentions.