Secuno
ENNL
Book demo

CVE-2023-28206

Apple iOS, iPadOS, and macOS IOSurfaceAccelerator Out-of-Bounds Write

8.6 HIGHActively exploited (CISA KEV)EPSS 23.2%
  1. Published10 Apr 2023
  2. Added to CISA KEV10 Apr 2023
  3. Remediation due1 May 2023
Actively exploited (CISA KEV)

Apple iOS, iPadOS, and macOS IOSurfaceAccelerator contain an out-of-bounds write vulnerability that allows an app to execute code with kernel privileges.

Added to KEV: 10 Apr 2023Federal remediation due: 1 May 2023

Description

An out-of-bounds write issue was addressed with improved input validation. This issue is fixed in macOS Monterey 12.6.5, iOS 16.4.1 and iPadOS 16.4.1, macOS Ventura 13.3.1, iOS 15.7.5 and iPadOS 15.7.5, macOS Big Sur 11.7.6. An app may be able to execute arbitrary code with kernel privileges. Apple is aware of a report that this issue may have been actively exploited.

CVSS 3.1 breakdown

Attack vectorLocal
Attack complexityLow
Privileges requiredNone
User interactionRequired
ScopeChanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H

Affected products

Apple iPadOS≥ 16.0 < 16.4.1 · < 15.7.5
Apple iPhone OS≥ 16.0 < 16.4.1 · < 15.7.5
Apple macOS≥ 12.0 < 12.6.5 · ≥ 13.0 < 13.3.1 · < 11.7.6

Remediation

Fixed in
Apple iPadOS≥ 16.4.1
Apple iPhone OS≥ 16.4.1
Apple macOS≥ 12.6.5

References

Related CVEs

Recent high-severity vulnerabilities sharing a weakness type.

CVE-2026-1078158.5
MariaDB server is a community developed fork of MySQL server. From 10.6.1 until…
CVE-2026-195708.8
The LE Audio Broadcast Sink in subsys/bluetooth/audio/bap_broadcast_sink.c copies…
CVE-2026-1079099.1
A heap-based out-of-bounds write in the ws_read_frame function (src/bolt/ws.c) and the…
CVE-2026-1079089.8
A heap-based out-of-bounds write in the BoltReadHandler function (src/bolt/bolt_api.c)…
CVE-2026-823448.1
IBM Guardium Data Protection 12.0, 12.1 is vulnerable to a heap-based buffer overflow…
CVE-2026-823358.1
IBM Guardium Data Protection 12.0, 12.1, 12.2 is vulnerable to a heap-based buffer…

Frequently asked

Is CVE-2023-28206 being actively exploited?

Yes. CVE-2023-28206 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, added 10 Apr 2023.

How severe is CVE-2023-28206?

CVE-2023-28206 has a CVSS 3.1 base score of 8.6, rated high. EPSS estimates a 23.2% probability of exploitation.

Which products are affected by CVE-2023-28206?

Affected products include Apple iPadOS, Apple iPhone OS, Apple macOS.

How do I fix CVE-2023-28206?

Upgrade affected software to a fixed version, for example Apple iPadOS 16.4.1, Apple iPhone OS 16.4.1, Apple macOS 12.6.5 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2023-28206 against the real software inventory on every managed device, as each hourly inventory arrives. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. Because it is on the CISA KEV list, a risk for it never ranks below high, and the update that fixes it moves to the Emergency patch lane. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

See how prioritisation worksBook a demo

Get Patch this first every Monday

Five vulnerabilities that matter this week, ranked on real exploitation. Plain language, one email, no spam.

You can unsubscribe with one click from every issue. We handle your details as described in our privacy policy.

Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.