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CVE-2023-32409

Apple Multiple Products WebKit Sandbox Escape

8.6 HIGHActively exploited (CISA KEV)EPSS 16.5%
  1. Published23 Jun 2023
  2. Added to CISA KEV22 May 2023
  3. Remediation due12 Jun 2023
Actively exploited (CISA KEV)

Apple iOS, iPadOS, macOS, tvOS, watchOS, and Safari WebKit contain an unspecified vulnerability that can allow a remote attacker to break out of the Web Content sandbox. This vulnerability could impact HTML parsers that use WebKit, including but not limited to Apple Safari and non-Apple products which rely on WebKit for HTML processing.

Added to KEV: 22 May 2023Federal remediation due: 12 Jun 2023

Description

The issue was addressed with improved bounds checks. This issue is fixed in watchOS 9.5, tvOS 16.5, macOS Ventura 13.4, iOS 15.7.8 and iPadOS 15.7.8, Safari 16.5, iOS 16.5 and iPadOS 16.5. A remote attacker may be able to break out of Web Content sandbox. Apple is aware of a report that this issue may have been actively exploited.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
ScopeChanged
ConfidentialityNone
IntegrityHigh
AvailabilityNone
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N

Affected products

Apple Safari< 16.5
Apple iPadOS≥ 15.0 < 15.7.8 · ≥ 16.0 < 16.5
Apple iPhone OS≥ 15.0 < 15.7.8 · ≥ 16.0 < 16.5
Apple macOS≥ 13.0 < 13.4
Apple Tvos< 16.5
Apple Watchos< 9.5

Remediation

Fixed in
Apple Safari≥ 16.5
Apple iPadOS≥ 15.7.8
Apple iPhone OS≥ 15.7.8
Apple macOS≥ 13.4
Apple Tvos≥ 16.5
Apple Watchos≥ 9.5

References

Frequently asked

Is CVE-2023-32409 being actively exploited?

Yes. CVE-2023-32409 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, added 22 May 2023.

How severe is CVE-2023-32409?

CVE-2023-32409 has a CVSS 3.1 base score of 8.6, rated high. EPSS estimates a 16.5% probability of exploitation.

Which products are affected by CVE-2023-32409?

Affected products include Apple Safari, Apple iPadOS, Apple iPhone OS, Apple macOS, Apple Tvos, and 1 more.

How do I fix CVE-2023-32409?

Upgrade affected software to a fixed version, for example Apple Safari 16.5, Apple iPadOS 15.7.8, Apple iPhone OS 15.7.8 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2023-32409 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.

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