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CVE-2021-1782

53
FAUCET Score

CVE-2021-1782 is a race condition vulnerability affecting Apple's iOS, iPadOS, macOS, tvOS, and watchOS that could allow a malicious application to elevate privileges. This high-severity flaw (CVSS 7.0) has a low attack complexity and can lead to full compromise of confidentiality, integrity, and availability. Notably, Apple confirmed active exploitation of this vulnerability in the wild, with reports linking it to the Shlayer malware and Unc0ver jailbreak. While no public exploit code is available, the vulnerability has garnered significant community discussion and media coverage, indicating its importance.

Impacted Technologies

VendorProductVersion(s)CPE
< 14.4CPE matchmatch criteria
cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:*
< 14.4CPE matchmatch criteria
cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*
>= 10.14, < 10.14.6CPE matchmatch criteria
cpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:*
>= 10.15, < 10.15.7CPE matchmatch criteria
cpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:*
10.14.6CPE matchmatch criteria
cpe:2.3:o:apple:mac_os_x:10.14.6:-:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.0HIGH

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

Attack Vector
LOCAL
Attack Complexity
HIGH
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
1.0
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
2.22%
Probability of exploitation in next 30 days
EPSS Percentile
80.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
Added to KEV · Nov 3, 2021
This CVE's current EPSS score of 0.0222 is in the 96th percentile among its peer group of 1,516 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.4 InfoSec Media, 0.1 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Patches (1)

applevendor investigatingvia nvd_reference
View patch

References

cisa.gov / known-exploited-vulnerabilities-catalog
US Government Resource
support.apple.com / en-us/HT212146
Release NotesVendor Advisory
support.apple.com / en-us/HT212147
Release NotesVendor Advisory
support.apple.com / en-us/HT212148
Release NotesVendor Advisory
support.apple.com / en-us/HT212149
Release NotesVendor Advisory