What is CVE-2022-42837?

CVE-2022-42837 is a critical-severity vulnerability in Apple Ipados, classified under Improper Input Validation. CVSS score: 9.8/10. Published 2022-12-15.

How severe is CVE-2022-42837?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Is CVE-2022-42837 known to be exploited?

4 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Improper input validation in Apple Ipados

CVE-2022-42837

An issue existed in the parsing of URLs. This issue was addressed with improved input validation. This issue is fixed in iOS 16.2 and iPadOS 16.2, macOS Ventura 13.1, iOS 15.7.2 and iPadOS 15.7.2, watchOS 9.2. A remote user may be able to cause unexpected app termination or arbitrary code execution.

Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)

Published 2022-12-15 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.021 (81.4th percentile), scored 2026-10-03.

Low probability of exploitation in the next 30 days, but still tracked. 81st percentile — 81.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.021 · newest: 0.021 · change: +0.001

Affected products

Apple Ipados
Apple Iphone OS
Apple macOS — versions unspecified, 13.0
Apple watchOS — versions unspecified

Weakness classification (CWE)

CWE-20 — Improper Input Validation

Public proof-of-concept exploits

References

support.apple.com/kb/HT213535
support.apple.com/en-us/HT213532 (Release Notes, Vendor Advisory)
support.apple.com/en-us/HT213530 (Release Notes, Vendor Advisory)
support.apple.com/en-us/HT213531 (Release Notes, Vendor Advisory)
support.apple.com/en-us/HT213536 (Release Notes, Vendor Advisory)
seclists.org/fulldisclosure/2022/Dec/20 (mailing-list, Mailing List, Third Party Advisory)
seclists.org/fulldisclosure/2022/Dec/21 (mailing-list, Mailing List, Third Party Advisory)
seclists.org/fulldisclosure/2022/Dec/23 (mailing-list, Mailing List, Third Party Advisory)
seclists.org/fulldisclosure/2022/Dec/27 (mailing-list)

Frequently asked questions

What is CVE-2022-42837?: CVE-2022-42837 is a critical-severity vulnerability in Apple Ipados, classified under Improper Input Validation. CVSS score: 9.8/10. Published 2022-12-15.
How severe is CVE-2022-42837?: Critical severity. CVSS v3 base score is 9.8 out of 10.
Is CVE-2022-42837 known to be exploited?: 4 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.