CVE-2023-37450: Apple Safari · Processing web content may lead to arbitrary code execution
Affects Apple SafariSource CVE Database V5
Exploited in the wild · KEV due 3 Aug 2023 · 18% EPSS · fixed in 16.6 : patch Apple Safari now.
Data as of 26 Oct 2026, 06:26 UTC
- KEV deadline
- US federal agencies must patch by this date; a sensible deadline for everyone else.
- EPSS
- 18.9% chance of exploitation in 30 days – higher than 97% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in 16.6
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:HExploitation evidence
t = 0 is the CVE’s publication on cve.org
Disclosed: evidence found.
CVE published 26 Jul 2023
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: evidence found.
Listed in CISA KEV 13 days before disclosure
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
Timeline
CVE ID reserved
by apple
, 21 days before disclosure
Added to CISA KEV (opens in a new tab)
exploitation confirmed
, 13 days before disclosure
CVE published
on cve.org
, t = 0
KEV remediation due
US federal deadline
, 8 days after disclosure
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), CISA KEV (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 2026-10-26.
What to do
Apply updates per vendor instructions or discontinue use of the product if updates are unavailable.
- support.apple.com/en-us/HT213826 (opens in a new tab)
- support.apple.com/en-us/HT213841 (opens in a new tab)
- support.apple.com/en-us/HT213843 (opens in a new tab)
- support.apple.com/en-us/HT213846 (opens in a new tab)
- support.apple.com/en-us/HT213848 (opens in a new tab)
- nvd.nist.gov/vuln/detail/CVE-2023-37450 (opens in a new tab)
Description
The issue was addressed with improved checks. This issue is fixed in iOS 16.6 and iPadOS 16.6, Safari 16.5.2, tvOS 16.6, macOS Ventura 13.5, watchOS 9.6. Processing web content may lead to arbitrary code execution. Apple is aware of a report that this issue may have been actively exploited.
References
- support.apple.com/en-us/HT213826 (opens in a new tab)
- support.apple.com/en-us/HT213846 (opens in a new tab)
- support.apple.com/en-us/HT213841 (opens in a new tab)
- support.apple.com/en-us/HT213843 (opens in a new tab)
- support.apple.com/en-us/HT213848 (opens in a new tab)
- security.gentoo.org/glsa/202401-04 (opens in a new tab)
- cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-37450 (opens in a new tab)