Vulnerability

CVE-2022-42856

High· 8.8KEVCVSS8.8EPSS0%

.rules3/5

Apple iOS Type Confusion Vulnerability

Apple iOS contains a type confusion vulnerability when processing maliciously crafted web content leading to code execution.

Threat signal

98/100

Severe

Severity

high

CVSS

8.8

EPSS

Active

KEV

CISA KEV — actively exploited

1256d overdue

AffectedApple — iOS

Added to KEV

2022-12-14

Federal patch due (BOD 22-01)

2023-01-04

Required action (CISA verbatim)

Apply updates per vendor instructions.

Vendor advisory + references

CISA description: “Apple iOS contains a type confusion vulnerability when processing maliciously crafted web content leading to code execution.”

CVSS

v3.1Open in FIRST calculator →

8.8/ 10HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Attack VectorNetworkExploitable remotely over the internet — no local access needed.
Attack ComplexityLowNo special conditions — exploit works reliably.
Privileges RequiredNoneUnauthenticated — no credentials needed.
User InteractionRequiredRequires user action (click, file open, etc).
ScopeUnchangedImpact contained to the vulnerable component.
Confidentiality ImpactHighTotal disclosure of sensitive data.
Integrity ImpactHighTotal compromise of integrity — full data modification possible.
Availability ImpactHighTotal loss of availability — full DoS possible.

EPSS

Exploit prediction · 30-day horizonFIRST.org →

0.15%

probability of exploitation in next 30 days

p36

higher than 36% of all CVEs

3-day trend↑ 0pp

Low exploitation likelihood — defer if no other signals fire.

Vendor VEX

No VEX statements published for CVE-2022-42856. Vendors publish VEX (Vulnerability Exploitability eXchange) to assert per-product whether a CVE is actually exploitable in their distribution.

SSVCAct

Active exploitation with total impact on essential/support systems

exploitation: active
automatable: yes
impact: total
mission: support

Lifecycle

2022-12-14Added to CISA KEVransomware: Unknown
2022-12-14Published
2023-01-04Federal patch due (BOD 22-01)
2023-06-12Vendor advisory · amazon-linuxALAS2-2023-2088 — ALAS2-2023-2088 (important): webkitgtk4
2026-06-12Last modified1 source

Entity graph

2 nodes · 1 edges · click to pivot

CVEActorVendor advisoryIOCNews

Vendor advisories

amazon-linuxALAS2-2023-2088ALAS2-2023-2088 (important): webkitgtk4

No source-event history recorded yet. New revisions will appear here as ingestors re-fetch this CVE.