CVE-2021-30755 json
Processing a maliciously crafted font may result in the disclosure of process memory.
published 2021-09-08 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-17672
- cvss
- 6.5
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.3%
- EPSS 1.3% chance of exploitation in 30 days, percentile 71%
- public exploits
- 0
- none known
Summary
Processing a maliciously crafted font may result in the disclosure of process memory. This issue is fixed in macOS Big Sur 11.4, tvOS 14.6, watchOS 7.5. An out-of-bounds read was addressed with improved input validation.
Patch / fix
- Apple macOS 7.5, 11.4, 14.6
Exploit prediction
1.33% chance of exploitation in the next 30 days, higher than 71% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 6.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N |
| NVD | 2.0 | 4.3 | AV:N/AC:M/Au:N/C:P/I:N/A:N |
Affected products
- Apple macOS
Classification
- Weakness
-
- CWE-125 Out-of-bounds Read
References
-
support.apple.com
/en-us/HT212529
vendor-advisory
-
support.apple.com
/en-us/HT212532
vendor-advisory
-
support.apple.com
/en-us/HT212533
vendor-advisory
Sources
- CVE List CVE-2021-30755
- NVD CVE-2021-30755
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.