CVE-2023-23494 — A buffer overflow was addressed with improved bounds checking

A buffer overflow was addressed with improved bounds checking. This issue is fixed in iOS 16.4 and iPadOS 16.4. A user in a privileged network position may be able to cause a denial-of-service.

01What is this vulnerability?

A buffer overflow was addressed with improved bounds checking. This issue is fixed in iOS 16.4 and iPadOS 16.4. A user in a privileged network position may be able to cause a denial-of-service.

02Affected products

Vendor	Product	Versions
Apple	iOS and iPadOS	unspecified

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

• Published: 2023-05-08T00:00:00.000Z
• Last modified: 2025-01-29T16:06:28.360Z

09References

• support.apple.com — https://support.apple.com/en-us/HT213676