CVE-2019-8657 json
An out-of-bounds read was addressed with improved input validation.
published 2019-12-18 6 y ago modified 2026-06-17 4 mo ago also EUVD-2019-18047
- cvss
- 8.8
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.9%
- EPSS 1.9% chance of exploitation in 30 days, percentile 79%
- public exploits
- 0
- none known
Summary
An out-of-bounds read was addressed with improved input validation. This issue is fixed in iOS 12.4, macOS Mojave 10.14.6, tvOS 12.4, watchOS 5.3. Parsing a maliciously crafted office document may lead to an unexpected application termination or arbitrary code execution.
Patch / fix
- Apple iOS iOS 12.4
- Apple macOS macOS Mojave 10.14.6
- Apple tvOS tvOS 12.4
- Apple watchOS watchOS 5.3
Exploit prediction
1.92% chance of exploitation in the next 30 days, higher than 79% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 8.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 6.8 | AV:N/AC:M/Au:N/C:P/I:P/A:P |
Affected products
- Apple iOS
- Apple macOS
- Apple tvOS
- Apple watchOS
Classification
- Weakness
-
- CWE-125 Out-of-bounds Read
References
-
support.apple.com
/HT210353
vendor-advisory
-
support.apple.com
/HT210346
vendor-advisory
-
support.apple.com
/HT210348
vendor-advisory
-
support.apple.com
/HT210351
vendor-advisory
Sources
- CVE List CVE-2019-8657
- NVD CVE-2019-8657
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.