What is CVE-2022-22587?

CVE-2022-22587 is a critical-severity vulnerability in Apple iOS And Ipados, classified under Out-of-bounds Write. CVSS score: 9.8/10. Published 2022-03-18.

How severe is CVE-2022-22587?

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

Is CVE-2022-22587 known to be exploited?

Yes. CVE-2022-22587 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2022-01-28), indicating it is being actively exploited. 5 public proof-of-concept repositories are indexed.

Buffer overflow in Apple iOS And Ipados

CVE-2022-22587

A memory corruption issue was addressed with improved input validation. This issue is fixed in iOS 15.3 and iPadOS 15.3, macOS Big Sur 11.6.3, macOS Monterey 12.2. A malicious application may be able to execute arbitrary code with kernel privileges. Apple is aware of a report that this issue may have been actively exploited..

Vulnerability class: Buffer Overflow

Published 2022-03-18 · 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: 0.116 (96.0th percentile), scored 2026-10-19.

Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 96th percentile — 96.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.116 · newest: 0.116 · change: 0.000

Affected products

Apple iOS And Ipados — versions unspecified
Apple Ipados
Apple Iphone OS
Apple macOS — versions unspecified

Weakness classification (CWE)

CWE-787 — Out-of-bounds Write

CISA KEV (Known Exploited Vulnerabilities)

This CVE is on the CISA KEV catalog, added on 2022-01-28. CISA KEV inclusion means CISA has confirmed in-the-wild exploitation; US federal agencies are required to remediate within a published due date.

BOD 22-01 due date: 2022-02-11.

Required action: Apply updates per vendor instructions.

Public proof-of-concept exploits

References

support.apple.com/en-us/HT213055 (Release Notes, Vendor Advisory)
support.apple.com/en-us/HT213053 (Release Notes, Vendor Advisory)
support.apple.com/en-us/HT213054 (Release Notes, Vendor Advisory)
134c704f-9b21-4f2e-91b3-4a467353bcc0 (Third Party Advisory, US Government Resource)

Frequently asked questions

What is CVE-2022-22587?: CVE-2022-22587 is a critical-severity vulnerability in Apple iOS And Ipados, classified under Out-of-bounds Write. CVSS score: 9.8/10. Published 2022-03-18.
How severe is CVE-2022-22587?: Critical severity. CVSS v3 base score is 9.8 out of 10.
Is CVE-2022-22587 known to be exploited?: Yes. CVE-2022-22587 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2022-01-28), indicating it is being actively exploited. 5 public proof-of-concept repositories are indexed.