CVE-2026-43746 json
A use-after-free issue was addressed with improved memory management.
published 4mo ago modified last mo. also EUVD-2026-40207
- cvss
- 6.5
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.3%
- EPSS 0.3% chance of exploitation in 30 days, percentile 27%
- public exploits
- 0
- none known
Summary
A use-after-free issue was addressed with improved memory management. This issue is fixed in Safari 26.5.2, iOS 18.7.10 and iPadOS 18.7.10, iOS 26.5.2 and iPadOS 26.5.2, macOS Tahoe 26.5.2. Processing maliciously crafted web content may lead to an unexpected Safari crash.
Patch / fix
- Apple Safari 26.5.2
- Apple iOS and iPadOS 18.7.10, 26.5.2
- Apple macOS 26.5.2
Is CVE-2026-43746 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.
Check with FencerCISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 4mo ago
Exploit prediction
0.34% chance of exploitation in the next 30 days, higher than 27% of all scored CVEs (FIRST EPSS, 2026-11-09).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CISA ADP | 3.1 | 6.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H |
| CNA | 3.1 | 6.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H |
Affected products
- Apple Safari
- Apple iOS and iPadOS
- Apple macOS
Classification
- Weakness
-
- CWE-416 Use After Free
References
-
support.apple.com
/en-us/127594
vendor-advisory
-
support.apple.com
/en-us/127595
vendor-advisory
-
support.apple.com
/en-us/127685
vendor-advisory
- support.apple.com /en-us/148287
Sources
- CVE List CVE-2026-43746
- NVD CVE-2026-43746
Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.