How to check if you are exposed to CVE-2022-42856
- Find every Apple iOS system you or your clients run, including ones exposed to the internet. Those come first: CISA only lists flaws attackers are already using.
- Compare each version with the fixed versions in the vendor advisory below. Where no fix exists yet, apply the vendor’s mitigation or take the system off the internet.
- Run a credentialed vulnerability scan to catch the systems you missed, then check that the next scan no longer reports CVE-2022-42856.
US federal agencies had to fix this by 2023-01-04. Everyone else should treat that deadline as a guide: if it has passed, this is overdue.
Timeline
- · Added to CISA's Known Exploited Vulnerabilities catalog
- · Fix-by date for US federal agencies, passed 1,397 days ago
Vendor advisories and fixes
Weakness type
More exploited Apple vulnerabilities
CISA lists 95 exploited Apple vulnerabilities. The closest matches:
- CVE-2016-4657Apple iOS Webkit Memory Corruption VulnerabilityAdded 2022-05-24
- CVE-2016-4656Apple iOS Memory Corruption VulnerabilityAdded 2022-05-24
- CVE-2016-4655Apple iOS Information Disclosure VulnerabilityAdded 2022-05-24
- CVE-2019-7287Apple iOS Memory Corruption VulnerabilityAdded 2022-05-23
- CVE-2021-30762Apple iOS WebKit Use-After-Free VulnerabilityAdded 2021-11-03
- CVE-2021-30761Apple iOS WebKit Memory Corruption VulnerabilityAdded 2021-11-03
- CVE-2021-30666Apple iOS WebKit Buffer Overflow VulnerabilityAdded 2021-11-03
- CVE-2026-86950Apple Multiple Products Out-of-Bounds Write VulnerabilityAdded 2026-09-29
Keep going
Sources: CISA Known Exploited Vulnerabilities catalog (version 2026.10.30); EPSS data from FIRST.org; CVSS and descriptions from the NIST National Vulnerability Database. Checked 2026-11-01. This product uses the NVD API but is not endorsed or certified by the NVD.