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CVE-2021-1858

25
FAUCET Score

CVE-2021-1858 is an out-of-bounds write vulnerability affecting Apple's iOS, iPadOS, macOS, tvOS, and watchOS. It allows for arbitrary code execution when processing a maliciously crafted image. This vulnerability has a CVSS score of 7.8 (High), indicating a significant risk due to its local attack vector, low attack complexity, and high impact on confidentiality, integrity, and availability. There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 14.5CPE matchmatch criteria
cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:*
< 14.5CPE matchmatch criteria
cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*
10.14CPE matchmatch criteria
cpe:2.3:o:apple:mac_os_x:10.14:*:*:*:*:*:*:*
10.14.0CPE matchmatch criteria
cpe:2.3:o:apple:mac_os_x:10.14.0:*:*:*:*:*:*:*
10.14.1CPE matchmatch criteria
cpe:2.3:o:apple:mac_os_x:10.14.1:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.8HIGH

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

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.14%
Probability of exploitation in next 30 days
EPSS Percentile
63.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0114 is in the 61st percentile among its peer group of 11,621 CVEs.

Social Chatter

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

Media 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 0.0 Security Researcher mentions.

Remediation

Vendor Patches (1)

applevendor investigatingvia nvd_reference
View patch

References

support.apple.com / en-us/HT212317
Vendor Advisory
support.apple.com / en-us/HT212323
Vendor Advisory
support.apple.com / en-us/HT212324
Vendor Advisory
support.apple.com / en-us/HT212325
Vendor Advisory
support.apple.com / en-us/HT212326
Vendor Advisory