CVE-2025-43400

An out-of-bounds write issue was addressed with improved bounds checking. This issue is fixed in watchOS 26.1, tvOS 26.1. Processing a maliciously crafted font may lead to unexpected app termination or corrupt process memory.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTNIST
6.3 MEDIUM
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L
appleCNA
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CISA-ADPADP
6.3 MEDIUM
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L
CVEADP
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Base Score
CVSS 3.x
EPSS Score
Percentile: 14%
VendorProductVersion
appleipados
𝑥
< 18.7.1
appleipados
26.0
appleiphone_os
𝑥
< 18.7.1
appleiphone_os
26.0
applemacos
14.0 ≤
𝑥
< 14.8.1
applemacos
15.0 ≤
𝑥
< 15.7.1
applemacos
26.0
applevisionos
𝑥
< 26.0.1
𝑥
= Vulnerable software versions
Common Weakness Enumeration
References
https://support.apple.com/en-us/125637
https://support.apple.com/en-us/125639
http://seclists.org/fulldisclosure/2025/Sep/73
http://seclists.org/fulldisclosure/2025/Sep/76
http://seclists.org/fulldisclosure/2025/Sep/78