CVE-2023-40448

HIGHNVD 8.68.6—Elevated

8.6

The issue was addressed with improved handling of protocols. This issue is fixed in tvOS 17, iOS 16.7 and iPadOS 16.7, watchOS 10, iOS 17 and iPadOS 17, macOS Sonoma 14. A remote attacker may be able to break out of Web Content sandbox.

CVSS v3: 8.6
EG Score: 8.6(medium)
EPSS: 72.1%
KEV: Not listed

Published

September 27, 2023

Last Modified

November 4, 2025

References (23)

product-security@applehttp://seclists.org/fulldisclosure/2023/Oct/10
product-security@applehttp://seclists.org/fulldisclosure/2023/Oct/3
product-security@applehttp://seclists.org/fulldisclosure/2023/Oct/4
product-security@applehttp://seclists.org/fulldisclosure/2023/Oct/8
product-security@applehttps://support.apple.com/en-us/HT213927
product-security@applehttps://support.apple.com/en-us/HT213936
product-security@applehttps://support.apple.com/en-us/HT213937
product-security@applehttps://support.apple.com/en-us/HT213938
product-security@applehttps://support.apple.com/en-us/HT213940
af854a3a-2127-422b-91ae-364da2661108http://seclists.org/fulldisclosure/2023/Oct/10
af854a3a-2127-422b-91ae-364da2661108http://seclists.org/fulldisclosure/2023/Oct/3
af854a3a-2127-422b-91ae-364da2661108http://seclists.org/fulldisclosure/2023/Oct/4
af854a3a-2127-422b-91ae-364da2661108http://seclists.org/fulldisclosure/2023/Oct/8
af854a3a-2127-422b-91ae-364da2661108https://support.apple.com/en-us/HT213927
af854a3a-2127-422b-91ae-364da2661108https://support.apple.com/en-us/HT213936

Data Freshness Timeline

(refreshed 9× in last 7d / 55× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

2026-06-23 21:31 UTCEPSS rescore
2026-06-23 21:31 UTCEPSS rescore
2026-06-21 14:55 UTCEPSS rescore
2026-06-21 14:55 UTCEPSS rescore
2026-06-19 19:24 UTCEPSS rescore
2026-06-19 19:24 UTCEPSS rescore
2026-06-18 17:51 UTCEPSS rescore
2026-06-17 17:51 UTCEPSS rescore
2026-06-17 17:51 UTCEPSS rescore
2026-06-16 17:51 UTCEPSS rescore
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2026-06-15 17:47 UTCEPSS rescore
2026-06-15 17:47 UTCEPSS rescore
2026-06-14 23:16 UTCEPSS rescore
2026-06-13 22:59 UTCEPSS rescore
2026-06-13 22:59 UTCEPSS rescore
2026-06-12 23:10 UTCEPSS rescore
2026-06-12 23:10 UTCEPSS rescore
2026-06-11 13:59 UTCEPSS rescore
2026-06-11 13:59 UTCEPSS rescore
2026-06-10 22:17 UTCEPSS rescore
2026-06-10 13:21 UTCEPSS rescore
2026-06-10 13:21 UTCEPSS rescore
2026-06-08 14:16 UTCEPSS rescore
2026-06-08 14:16 UTCEPSS rescore

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2026-06-07 15:23 UTCEPSS rescore
2026-06-07 15:23 UTCEPSS rescore
2026-06-06 13:46 UTCEPSS rescore
2026-06-06 13:46 UTCEPSS rescore
2026-06-05 22:46 UTCEPSS rescore
2026-06-05 22:46 UTCEPSS rescore
2026-06-05 06:09 UTCEPSS rescore
2026-06-05 06:09 UTCEPSS rescore
2026-06-05 06:09 UTCEPSS rescore
2026-06-04 13:11 UTCEPSS rescore
2026-06-04 13:11 UTCEPSS rescore
2026-06-02 20:12 UTCEPSS rescore
2026-06-02 20:12 UTCEPSS rescore
2026-06-01 13:51 UTCEPSS rescore
2026-06-01 13:51 UTCEPSS rescore
2026-05-31 22:30 UTCEPSS rescore
2026-05-31 22:29 UTCEPSS rescore
2026-05-31 00:15 UTCEPSS rescore
2026-05-31 00:15 UTCEPSS rescore
2026-05-29 13:43 UTCEPSS rescore
2026-05-29 13:43 UTCEPSS rescore
2026-05-28 13:44 UTCEPSS rescore
2026-05-28 13:43 UTCEPSS rescore
2026-05-27 13:39 UTCEPSS rescore
2026-05-27 13:39 UTCEPSS rescore
2026-05-26 13:43 UTCEPSS rescore
2026-05-26 13:43 UTCEPSS rescore
2026-05-26 07:18 UTCEPSS rescore
2026-05-26 07:18 UTCEPSS rescore
2026-05-26 07:18 UTCEPSS rescore
2026-05-24 17:05 UTCEG score recompute
2026-05-24 17:05 UTCGHSA enrichment
2026-05-23 14:11 UTCOSV refresh

Publicly available exploits

(1 reference)

Working exploit code is in the public domain (1 GitHub PoC). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

GitHub PoCw0wbox/CVE-2023-40448
First seen Jan 31, 2025
poc for CVE-2023-40448 (under construction) ,This could probably be a piece for a jailbreak
Open source ↗

Frequently asked(5)

What is CVE-2023-40448?

CVE-2023-40448 is a high vulnerability published on September 27, 2023. The issue was addressed with improved handling of protocols. This issue is fixed in tvOS 17, iOS 16.7 and iPadOS 16.7, watchOS 10, iOS 17 and iPadOS 17, macOS Sonoma 14. A remote attacker may be able to break out of Web Content sandbox.

When was CVE-2023-40448 disclosed?

CVE-2023-40448 was first published in the National Vulnerability Database on September 27, 2023, with the most recent update on November 4, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2023-40448 actively exploited?

CVE-2023-40448 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 72.1% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2023-40448?

CVE-2023-40448 has a CVSS v3 base score of 8.6 (NVD).

How do I remediate CVE-2023-40448?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2023-40448, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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CVE-2023-40448

📅 Published

🔄 Last Modified

🔗 References (23)