CVE-2021-39803 json
In ~Impl of C2AllocatorIon.cpp, there is a possible out of bounds read due to a use after free.
published 2022-04-12 4 y ago modified 2026-06-17 4 mo ago also EUVD-2021-26160
- cvss
- 6.5
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.6%
- EPSS 0.6% chance of exploitation in 30 days, percentile 51%
- public exploits
- 0
- none known
Summary
In ~Impl of C2AllocatorIon.cpp, there is a possible out of bounds read due to a use after free. This could lead to remote information disclosure with no additional execution privileges needed. User interaction is needed for exploitation.Product: AndroidVersions: Android-10 Android-11 Android-12 Android-12LAndroid ID: A-193790350
Patch / fix
Exploit prediction
0.65% chance of exploitation in the next 30 days, higher than 51% 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
- n/a Android
Classification
- Weakness
-
- CWE-416 Use After Free
References
-
source.android.com
/security/bulletin/2022-04-01
patch, vendor-advisory
Sources
- CVE List CVE-2021-39803
- NVD CVE-2021-39803
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