CVE-2023-28205

HIGH KEV

Safari < 16.4.1 - Use-After-Free via Maliciously Crafted Web Content

Title source: llm
STIX 2.1

Exploitation Summary

CVE-2023-28205 is actively exploited and listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, added April 10, 2023. EIP tracks 2 public exploits from researchers including ntfargo, seregonwar.

AI-analyzed exploit summary This repository contains a functional proof-of-concept exploit for CVE-2023-28205, a use-after-free vulnerability in Apple WebKit. The exploit manipulates Map and Date objects to trigger garbage collection and access freed memory, potentially leading to arbitrary code execution.

Description

A use after free issue was addressed with improved memory management. This issue is fixed in Safari 16.4.1, iOS 15.7.5 and iPadOS 15.7.5, iOS 16.4.1 and iPadOS 16.4.1, macOS Ventura 13.3.1. Processing maliciously crafted web content may lead to arbitrary code execution. Apple is aware of a report that this issue may have been actively exploited.

Exploits (2)

nomisec WORKING POC 17 stars
by ntfargo · client-side
https://github.com/ntfargo/uaf-2023-28205

This repository contains a functional proof-of-concept exploit for CVE-2023-28205, a use-after-free vulnerability in Apple WebKit. The exploit manipulates Map and Date objects to trigger garbage collection and access freed memory, potentially leading to arbitrary code execution.

Classification
Working Poc 90%
Attack Type
Rce
Complexity
Moderate
Reliability
Racy
Target: Apple WebKit (Safari)
No auth needed
Prerequisites: Victim must visit a malicious webpage or open crafted content in Safari
devstral-2 · analyzed Feb 18, 2026 Full analysis →
nomisec WRITEUP 4 stars
by seregonwar · client-side
https://github.com/seregonwar/uaf-2023-28205

This repository provides a detailed technical analysis of CVE-2023-28205, a use-after-free vulnerability in Apple WebKit's structured clone deserialization logic. It includes root cause analysis, crash analysis, and confirms the vulnerability in WebKit-613.1.17.1 (PlayStation/Safari 15.4 lineage).

Classification
Writeup 95%
Attack Type
Rce
Complexity
Complex
Reliability
Reliable
Target: Apple WebKit (WebKit-613.1.17.1, Safari 15.4 lineage)
No auth needed
Prerequisites: Victim must visit a maliciously crafted webpage · Target must be running vulnerable WebKit version
devstral-2 · analyzed Feb 19, 2026 Full analysis →

References (5)

Core 5

Scores

CVSS v3 8.8
EPSS 0.2708
EPSS Percentile 97.8%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment
Exploitation active
Automatable no
Technical Impact total

Details

CISA KEV 2023-04-10
VulnCheck KEV 2023-04-07
InTheWild.io 2023-04-07
ENISA EUVD EUVD-2023-31913
CWE
CWE-416
Status published
Products (4)
apple/ipados < 15.7.5
apple/iphone_os < 15.7.5
apple/macos < 13.3.1
apple/safari < 16.4.1
Published Apr 10, 2023
KEV Added Apr 10, 2023
Tracked Since Feb 18, 2026