CVE-2026-43661 json
A buffer overflow issue was addressed with improved memory handling.
published 2026-05-11 5 mo ago modified 2026-10-26 13 d ago also EUVD-2026-29306
- cvss
- 7.5
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.3%
- EPSS 1.3% chance of exploitation in 30 days, percentile 69%
- public exploits
- 0
- none known
Summary
A buffer overflow issue was addressed with improved memory handling. This issue is fixed in iOS 18.7.10 and iPadOS 18.7.10, iOS 26.5 and iPadOS 26.5, iOS 26.7 and iPadOS 26.7, macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, macOS Tahoe 26.5, tvOS 26.5, watchOS 26.5. Processing a maliciously crafted image may corrupt process memory.
Patch / fix
- Apple iOS and iPadOS 18.7.10, 26.5, 26.7
- Apple macOS 14.8.8, 15.7.8, 26.5
- Apple tvOS 26.5
- Apple watchOS 26.5
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 5 mo ago
Exploit prediction
1.26% chance of exploitation in the next 30 days, higher than 69% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CISA ADP | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| CNA | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
Affected products
- Apple iOS and iPadOS
- Apple macOS
- Apple tvOS
- Apple watchOS
Classification
- Weakness
-
- CWE-121 Stack-based Buffer Overflow
References
-
support.apple.com
/en-us/127110
release-notes, vendor-advisory
-
support.apple.com
/en-us/127115
release-notes, vendor-advisory
-
support.apple.com
/en-us/127118
release-notes, vendor-advisory
-
support.apple.com
/en-us/127119
release-notes, vendor-advisory
- support.apple.com /en-us/128071
- support.apple.com /en-us/128072
- support.apple.com /en-us/148287
- support.apple.com /en-us/149041
Sources
- CVE List CVE-2026-43661
- NVD CVE-2026-43661
Fencer Vulns 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.