CVE Record
[ HIGH ]CVE-2022-42856
Apple iOS Type Confusion Vulnerability
Apple iOS contains a type confusion vulnerability when processing maliciously crafted web content leading to code execution.
- Vendor
- Apple
- Product
- iOS
- CVSS
- 8.8
- EPSS (exploit probability)
- 8.5%
- Status
- kev
- CISA patch-by (BOD 22-01)
- Added to KEV
Is CVE-2022-42856 being exploited?
Yes. CISA added CVE-2022-42856 to its Known Exploited Vulnerabilities catalog on . CISA only lists a CVE when it has reliable evidence of exploitation in the wild.
FIRST's EPSS model puts the probability of exploitation activity in the next 30 days at 8.5% (scored October 14, 2026).
- CISA KEV[ LISTED ]
- ENISA EUVD (exploited)[ — ]
- CIRCL KEV[ — ]
Catalog snapshot 2026-10-21. Full cross-catalog view: /kev-comparison
What to do
CISA required actionApply updates per vendor instructions.
US federal civilian agencies must remediate by (21 days after listing) under BOD 22-01. Everyone else: that deadline is a sensible upper bound, not a target. Vendor guidance and the NVD record are linked under Source above.
Other Apple iOS CVEs we track
| CVE / Vulnerability | Severity | CVSS | EPSS | Added to KEV |
|---|---|---|---|---|
| CVE-2016-4657 Apple iOS Webkit Memory Corruption Vulnerability | [ HIGH ] | 8.8 | 66.8% | |
| CVE-2016-4656 Apple iOS Memory Corruption Vulnerability | [ HIGH ] | 7.8 | 23.6% | |
| CVE-2016-4655 Apple iOS Information Disclosure Vulnerability | [ MEDIUM ] | 5.5 | 33.4% | |
| CVE-2019-7287 Apple iOS Memory Corruption Vulnerability | [ HIGH ] | 7.8 | 4.6% | |
| CVE-2021-30762 Apple iOS WebKit Use-After-Free Vulnerability | [ HIGH ] | 8.8 | 11.0% | |
| CVE-2021-30761 Apple iOS WebKit Memory Corruption Vulnerability | [ HIGH ] | 8.8 | 10.5% | |
| CVE-2021-30666 Apple iOS WebKit Buffer Overflow Vulnerability | [ HIGH ] | 8.8 | 3.0% |