CVE-2024-54534: Apple Safari · Processing maliciously crafted web content may lead to memory corruption
Affects Apple SafariSource CVE Database V5
Not known to be exploited · CVSS 8.8 High · fixed in 18.2 : patch Apple Safari soon.
Data as of 25 Oct 2026, 19:02 UTC
- EPSS
- 1.0% chance of exploitation in 30 days – higher than 63% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in 18.2
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:HExploitation evidence
Disclosed: evidence found.
CVE published 11 Dec 2024
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: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 2026-10-25.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| Apple Safari | Affected
| Fixed in– |
AI-suggested
Organizations should immediately deploy the security updates released by Apple for Safari 18.2 and the corresponding OS versions (iOS 18.2, iPadOS 18.2 and 17.7.6, macOS Sequoia 15.2, tvOS 18.2, visionOS 2.2, watchOS 11.2). Beyond patching, administrators should enforce strict web content filtering and implement network-level protections such as DNS filtering to block access to known malicious sites. User education on avoiding suspicious links and phishing attempts is critical to reduce the risk of user interaction exploitation. Employing endpoint detection and response (EDR) solutions capable of detecting anomalous browser behavior can help identify exploitation attempts. Regularly auditing and updating browser extensions and plugins can minimize attack surface. For high-security environments, consider restricting Safari usage or deploying alternative browsers with different rendering engines until patches are applied.
Description
The issue was addressed with improved memory handling. This issue is fixed in Safari 18.2, iOS 18.2 and iPadOS 18.2, iPadOS 17.7.6, macOS Sequoia 15.2, tvOS 18.2, visionOS 2.2, watchOS 11.2. Processing maliciously crafted web content may lead to memory corruption.
References
- support.apple.com/en-us/121837 (opens in a new tab)
- support.apple.com/en-us/121839 (opens in a new tab)
- support.apple.com/en-us/121843 (opens in a new tab)
- support.apple.com/en-us/121844 (opens in a new tab)
- support.apple.com/en-us/121845 (opens in a new tab)
- support.apple.com/en-us/121846 (opens in a new tab)
- support.apple.com/en-us/122372 (opens in a new tab)
- security.netapp.com/advisory/ntap-20250418-0002/ (opens in a new tab)
- seclists.org/fulldisclosure/2025/Apr/5 (opens in a new tab)
- seclists.org/fulldisclosure/2024/Dec/13 (opens in a new tab)
- seclists.org/fulldisclosure/2024/Dec/11 (opens in a new tab)
- seclists.org/fulldisclosure/2024/Dec/7 (opens in a new tab)
- seclists.org/fulldisclosure/2024/Dec/5 (opens in a new tab)