CVE-2025-30427: Processing maliciously crafted web content may lead to an unexpected Safari crash
Affects Apple SafariSource CVE Database V5
Not known to be exploited · CVSS 4.3 Medium · fixed in 18.4 : update Apple Safari when convenient.
Data as of 25 Oct 2026, 19:02 UTC
- EPSS
- 0.8% chance of exploitation in 30 days – higher than 57% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in 18.4
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:LExploitation evidence
Disclosed: evidence found.
CVE published 31 Mar 2025
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
A fix is available and included in Safari 18.4 and the specified OS updates (iOS 18.4, iPadOS 18.4 and 17.7.6, macOS Sequoia 15.4, tvOS 18.4, visionOS 2.4, watchOS 11.4). Users and administrators should update to these versions to remediate the vulnerability. No additional mitigations are specified or required beyond applying the official updates.
Description
A use-after-free issue was addressed with improved memory management. This issue is fixed in Safari 18.4, iOS 18.4 and iPadOS 18.4, iPadOS 17.7.6, macOS Sequoia 15.4, tvOS 18.4, visionOS 2.4, watchOS 11.4. Processing maliciously crafted web content may lead to an unexpected Safari crash.
References
- support.apple.com/en-us/122371 (opens in a new tab)
- support.apple.com/en-us/122372 (opens in a new tab)
- support.apple.com/en-us/122373 (opens in a new tab)
- support.apple.com/en-us/122376 (opens in a new tab)
- support.apple.com/en-us/122377 (opens in a new tab)
- support.apple.com/en-us/122378 (opens in a new tab)
- support.apple.com/en-us/122379 (opens in a new tab)
- lists.debian.org/debian-lts-announce/2025/06/msg00016.html (opens in a new tab)
- seclists.org/fulldisclosure/2025/Apr/13 (opens in a new tab)
- seclists.org/fulldisclosure/2025/Apr/8 (opens in a new tab)
- seclists.org/fulldisclosure/2025/Apr/5 (opens in a new tab)
- seclists.org/fulldisclosure/2025/Apr/4 (opens in a new tab)
- seclists.org/fulldisclosure/2025/Apr/12 (opens in a new tab)
- seclists.org/fulldisclosure/2025/Apr/11 (opens in a new tab)
- seclists.org/fulldisclosure/2025/Apr/2 (opens in a new tab)