critical Known exploitedREV. 01
CVE-2025-24201Apple WebKit — out-of-bounds write escapes the content sandbox
Safari 18.3.1, iOS and iPadOS 18.3.2 and the matching older branches write outside a buffer, letting crafted web content break out of the sandbox that is supposed to contain it.
Read the risk
THE VITAL STATS- CVSS score
- 10.0/ 10 CVSS v3.1
- EPSS probability
- 4% Likelihood of exploitation
- Attack complexity
- Low Conditions needed to exploit
- Known exploited
- Yes — CISA KEV
- CVE published
- 2025-03-11
- Added to KEV
- 2025-03-13
- Exploit published
- Not recorded
- Confidence
- high
- Kill chain
- privilege escalation
- MITRE ATT&CK
- T1203
- Severity
- critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Attacker needsThe user must open attacker-controlled web content in an affected browser.
Fixed inSafari 18.3.1, iOS 18.3.2, iPadOS 18.3.2, iPadOS 17.7.6, iOS 16.7.11, iPadOS 16.7.11, iOS 15.8.4, iPadOS 15.8.4, macOS Sequoia 15.3.2, visionOS 2.3.2
Behind the card
5 REFERENCES- 01CVE recordNVD recordnvd.nist.gov
- 02CISACISA Known Exploited Vulnerabilities catalogcisa.gov
- 03Vendor advisorysupport.apple.comsupport.apple.com
- 04Vendor advisorysupport.apple.comsupport.apple.com
- 05Vendor advisorysupport.apple.comsupport.apple.com
Field-level provenanceTRACE THE SOURCES +
Which source supports each field, when it was retrieved, and who extracted it.
| Fields | Source | Retrieved | Extractor | Confidence |
|---|---|---|---|---|
| cvss, exploitation.attack_complexity, exploitation.exploit_available, references, published_at | nvd.nist.gov | 2026-09-24 | scrty-crds-pipeline/0.1 | high |
| exploitation.known_exploited, exploitation.kev_added | cisa.gov | 2026-09-24 | scrty-crds-pipeline/0.1 | high |
| epss | api.first.org | 2026-09-24 | scrty-crds-pipeline/0.1 | high |
| title, summary, severity, remediation, mitre_attack, kill_chain, recommended_action, confidence, tags, exploitation.prerequisites | nvd.nist.gov | 2026-09-24 | claude-code | high |
Printing history
THE RECORD- r1Initial base card
First printing. This card has not been reprinted since publication.