CVE-2023-42917

Exploitation

Exploited in the wild. Listed in the CISA Known Exploited Vulnerabilities catalog on 2023-12-04. Federal remediation due 2023-12-25.

SSVC decision

• ExploitationactiveCISA reports credible evidence of active exploitation.
• AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
• Technical ImpacttotalSuccessful exploitation gives total control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

9.37% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 94.9% of scored records. A rank, not a probability.

NVD base score

8.8 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

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

NVD analysis status

Analyzed. NVD last modified this record on 2026-06-17.

Red Hat severity

Important. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2023-11-30 22:18Z2 YR AGO

Last updated

2025-10-21 23:05Z10 MO AGO

Reserved

2023-09-14

Assigning CNA

apple

Record state

PUBLISHED

Severity

High (CVSS 8.8)

CNA CVSS vector

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

Weaknesses

• CWE-787Out-of-bounds WriteBase

Data version

5.1

Document digest

938be236a0f83c254d5d673fcb6af90a7ec4007d89a7750d8d53ceb741a92b51

• support.apple.comhttps://support.apple.com/en-us/HT214033
• support.apple.comhttps://support.apple.com/en-us/HT214032
• support.apple.comhttps://support.apple.com/en-us/HT214031
• support.apple.comhttps://support.apple.com/kb/HT214033
• www.openwall.comhttp://www.openwall.com/lists/oss-security/2023/12/05/1
• lists.fedoraproject.orghttps://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/P5LQS6VEI7VIZNC7QGQ62EOV45R5RJIR/
• lists.fedoraproject.orghttps://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/AD2KIHHCUBQC2YYH3FJWAHI5BG3QETOH/
• support.apple.comhttps://support.apple.com/kb/HT214034
• www.debian.orghttps://www.debian.org/security/2023/dsa-5575
• seclists.orghttp://seclists.org/fulldisclosure/2023/Dec/3
• seclists.orghttp://seclists.org/fulldisclosure/2023/Dec/4
• seclists.orghttp://seclists.org/fulldisclosure/2023/Dec/5
• seclists.orghttp://seclists.org/fulldisclosure/2023/Dec/8
• seclists.orghttp://seclists.org/fulldisclosure/2023/Dec/13
• seclists.orghttp://seclists.org/fulldisclosure/2023/Dec/12
• security.gentoo.orghttps://security.gentoo.org/glsa/202401-04
• support.apple.comhttps://support.apple.com/kb/HT214062
• seclists.orghttp://seclists.org/fulldisclosure/2024/Jan/35
• www.cisa.govhttps://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-42917government-resource