CVE-2023-28206 affects Apple iOS and iPadOS, macOS. Previdian lists 5 version rows; examples include unspecified to < 15.7, unspecified to < 11.7, and unspecified to < 12.6.

Vulnerability report

Trusted Third Party Report Confirmed Confidence In CISA KEV

CVE-2023-28206

Q: Have exploitation attempts been observed?

Yes. Exploitation attempts have been reported for this vulnerability. Previdian lists it as a known exploited vulnerability. Listed in CISA KEV. Confidence is confirmed.

Q: What should we do?

Prioritize remediation. Validate affected assets and apply vendor fixes on an accelerated timeline.

iOS and iPadOS

Apple / iOS and iPadOS · affected before 15.7

Watch CVE-2023-28206 Browse KEV feed

Severity: CVSS 8.6 · High
Confidence: Confirmed
Exploit status: Trusted Third Party Report
EPSS: 23.2%
First observed: —
Last observed: —

Decision summary

What security teams need to know first

Direct answers before the deeper technical record.

What it is

CVE-2023-28206 is an unauthenticated vulnerability affecting Apple iOS and iPadOS, macOS. An out-of-bounds write issue was addressed with improved input validation.

Have exploitation attempts been observed?

Yes. Exploitation attempts have been reported for this vulnerability. Previdian lists it as a known exploited vulnerability. Listed in CISA KEV. Confidence is confirmed.

Who is affected?

Apple / iOS and iPadOS and macOS, including affected before 15.7, affected before 11.7, and affected before 12.6.

What should we do?

Prioritize remediation. Validate affected assets and apply vendor fixes on an accelerated timeline.

Overview

An out-of-bounds write issue was addressed with improved input validation

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.

Vendor Product Affected Status

Apple Affected

iOS and iPadOS

Before 15.7 Before 16.4

Affected

Apple Affected

macOS

Before 11.7 Before 12.6 Before 13.3

Affected

Published: 10 Apr 2023
Exploitation Attempts Reported: 10 Apr 2023
Attack vector: Local
Complexity: Low
Privileges: None
User interaction: Required

CVE References

CVE Record CVE.org · CVE Record https://www.cve.org/CVERecord?id=CVE-2023-28206
support.apple.com/en-us/HT213723 support.apple.com · CVE Record https://support.apple.com/en-us/HT213723
support.apple.com/en-us/HT213725 support.apple.com · CVE Record https://support.apple.com/en-us/HT213725
support.apple.com/en-us/HT213724 support.apple.com · CVE Record https://support.apple.com/en-us/HT213724
support.apple.com/en-us/HT213721 support.apple.com · CVE Record https://support.apple.com/en-us/HT213721
support.apple.com/en-us/HT213720 support.apple.com · CVE Record https://support.apple.com/en-us/HT213720

Exploitation evidence

Evidence of exploitation attempts

Third-party attestation and first-party sensor observation are shown separately so teams can judge the evidence chain.

Exploitation Attempts Observed in the Wild

CISA

Recorded 10 Apr 2023

A trusted third party reported exploitation attempts.

Known exploited vulnerability sources

Per-source evidence links for KEV attestations are available through the Previdian Pro API.

Learn about Pro API access

Source	Added
CISA First	2023-04-10 00:00 UTC

Detection

Operational artifacts and observed signals

Make the evidence actionable in scanner, SOC, and edge-control workflows.

Scanner coverage

Nessus template detected 02 Jun 2025.

View Nessus template

Virtual patch status

No Previdian virtual patch is currently available. Future rules ship for ModSecurity, Cloudflare, and AWS WAF.

Learn about virtual patches →

Scanner Artifacts

Scanner and exploit-framework references linked to this CVE.

Scanner	Reference	Detected
Nessus	https://www.tenable.com/plugins/nessus/174324	02 Jun 2025

Risk and context

Severity, weaknesses, and research context

CVSS v3.1

8.6 High

Potential damage if exploited. Separate from whether attackers are using it.

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H

EPSS

23.2%

Estimated chance of exploitation in the next 30 days. Previdian's warning comes from evidence, not this score.

Weaknesses

Out-of-bounds Write CWE-787

Timeline

From disclosure to observed exploitation attempts

02 Jun 2025
09:27 UTC

Nessus plugin available

Scanner coverage available
10 Apr 2023
00:00 UTC

Added to CISA KEV

Listed in the CISA Known Exploited Vulnerabilities catalog
10 Apr 2023
00:00 UTC

CVE published

Vulnerability disclosed publicly
13 Mar 2023
00:00 UTC

CVE ID reserved

Identifier reserved by the CNA

Pro API

Automate this intelligence

Confidence, exploit status, sensor telemetry, PoCs, scanner integrations, mentions, and tags are available programmatically for VM, SOC, and CTI workflows.

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Evidence confidence and provenance
First-party sensor telemetry
PoC and scanner references
Affected versions and enrichment
Automation-ready JSON delivery

GET /api/v2/pro/kevs/CVE-2023-28206

Sample API response

{
  "cve_id": "CVE-2023-28206",
  "confidence": "Confirmed",
  "cvss_score": 8.6,
  "cvss_estimated": false,
  "epss_score": 0.23215,
  "exploit_status": {
    "exploited_in_the_wild": true,
    "active_exploitation_observed": false
  },
  "sensor_telemetry": { "attempts": 0, "sensors": 0 }
}