--- title: "CVE-2023-42917: Out-of-bounds Write | CubePath" description: "A memory corruption vulnerability was addressed with improved locking. This issue is fixed in iOS 17.1.2 and iPadOS 17.1.2, macOS Sonoma 14.1.2, Safari…" language: en source: https://cubepath.com/security/cve/CVE-2023-42917 --- # CVE-2023-42917: Out-of-bounds Write | CubePath ## Description A memory corruption vulnerability was addressed with improved locking. This issue is fixed in iOS 17.1.2 and iPadOS 17.1.2, macOS Sonoma 14.1.2, Safari 17.1.2\. Processing web content may lead to arbitrary code execution. Apple is aware of a report that this issue may have been exploited against versions of iOS before iOS 16.7.1. Official description from the CVE record, published by apple. Copyright © 1999-2026 The MITRE Corporation. See [/security/cve/legal](https://cubepath.com/security/cve/legal) for the CVE license. [View the record on cve.org](https://www.cve.org/CVERecord?id=CVE-2023-42917) ## Key data ### CVSS 3.1 High 8.8 Score published by CISA-ADP in the CVE record. CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H | Metric | Value | What it means | | ---------------------- | --------- | ----------------------------------------------------------------------------------- | | Attack vector | Network | The vulnerable component can be reached over a network, possibly from the Internet. | | Attack complexity | Low | No special conditions are needed. The attack can be repeated at will. | | Privileges required | None | No account or privileges are needed. | | User interaction | Required | A user has to do something first, such as opening a file or following a link. | | Scope | Unchanged | The impact stays within the vulnerable component. | | Confidentiality impact | High | Serious or total effect on the secrecy of data. | | Integrity impact | High | Serious or total effect on the trustworthiness of data. | | Availability impact | High | Serious or total effect on availability. | CVSS is owned and managed by FIRST.Org, Inc. (FIRST) and is used by permission. Each CVSS score on this site is shown together with its vector string, as published in the CVE record by the source named next to it. Learn more at [first.org/cvss](https://www.first.org/cvss/) . ### EPSS Exploit Prediction Scoring System by FIRST: an estimate of the probability that exploitation activity will be observed in the next 30 days. Score 0.09295 (9.3% probability) Percentile 95.4% Scores of Nov 10, 2026 Model v2026.06.15 ### CISA Known Exploited Vulnerabilities This CVE is listed in the CISA KEV catalog. Name in the catalog Apple Multiple Products WebKit Memory Corruption Vulnerability Added to the catalog Dec 4, 2023 Federal due date Dec 25, 2023 ### CISA assessment as of Dec 2, 2023 Stakeholder-Specific Vulnerability Categorization (SSVC) decision points added by CISA. Exploitation Recorded by CISA as active Automatable no Technical impact total ### Weakness (CWE) CWE catalog version 5.0. CWE names: Copyright © 2006-2026, The MITRE Corporation. See [/security/cve/legal](https://cubepath.com/security/cve/legal) for the CWE license. - [CWE-787](https://cwe.mitre.org/data/definitions/787.html) Out-of-bounds Write ## Affected products Products listed in the CVE record, as the CNA published them. - Apple Safari - affected: unspecified up to before 17.1 - Apple macOS - affected: unspecified up to before 14.1 - Apple iOS and iPadOS - affected: unspecified up to before 17.1 ## References Links listed in the CVE record. They lead to other sites, which CubePath does not control. - [support.apple.com/en-us/HT214033](https://support.apple.com/en-us/HT214033) - [support.apple.com/en-us/HT214032](https://support.apple.com/en-us/HT214032) - [support.apple.com/en-us/HT214031](https://support.apple.com/en-us/HT214031) - [support.apple.com/kb/HT214033](https://support.apple.com/kb/HT214033) - [openwall.com/lists/oss-security/2023/12/05/1](http://www.openwall.com/lists/oss-security/2023/12/05/1) - [lists.fedoraproject.org/archives/list/package-announce@list…](https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/P5LQS6VEI7VIZNC7QGQ62EOV45R5RJIR/) - [lists.fedoraproject.org/archives/list/package-announce@list…](https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/AD2KIHHCUBQC2YYH3FJWAHI5BG3QETOH/) - [support.apple.com/kb/HT214034](https://support.apple.com/kb/HT214034) - [debian.org/security/2023/dsa-5575](https://www.debian.org/security/2023/dsa-5575) - [seclists.org/fulldisclosure/2023/Dec/3](http://seclists.org/fulldisclosure/2023/Dec/3) - [seclists.org/fulldisclosure/2023/Dec/4](http://seclists.org/fulldisclosure/2023/Dec/4) - [seclists.org/fulldisclosure/2023/Dec/5](http://seclists.org/fulldisclosure/2023/Dec/5) - [seclists.org/fulldisclosure/2023/Dec/8](http://seclists.org/fulldisclosure/2023/Dec/8) - [seclists.org/fulldisclosure/2023/Dec/13](http://seclists.org/fulldisclosure/2023/Dec/13) - [seclists.org/fulldisclosure/2023/Dec/12](http://seclists.org/fulldisclosure/2023/Dec/12) - [security.gentoo.org/glsa/202401-04](https://security.gentoo.org/glsa/202401-04) - [support.apple.com/kb/HT214062](https://support.apple.com/kb/HT214062) - [seclists.org/fulldisclosure/2024/Jan/35](http://seclists.org/fulldisclosure/2024/Jan/35) ## Timeline 1. ID reserved Sep 14, 2023 2. Record published Nov 30, 2023 3. Added to CISA KEV Dec 4, 2023 4. Record last updated Oct 21, 2025 ## Look up another CVE ## About CubePath CubePath is a cloud provider with data centers in Europe and the United States. It offers VPS, bare metal servers and DDoS protection. [Cloud VPS](https://cubepath.com/vps) [DDoS protection](https://cubepath.com/ddos-protection) Data from the CVE Program (MITRE), CISA KEV and FIRST EPSS. CVSS is owned by FIRST and used by permission. Not affiliated with or endorsed by MITRE, CISA or FIRST. Data as of Nov 10, 2026, 19:24 UTC. [Sources and licenses](https://cubepath.com/security/cve/legal)