CVE-2019-8641
An out-of-bounds read was addressed with improved input validation. This issue is fixed in iOS 12...
An out-of-bounds read was addressed with improved input validation.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
NVD Score used
An out-of-bounds read was addressed with improved input validation.
- Record
CVE-2019-8641- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - CVSS 2.0
- 7.5 High
AV:N/AC:L/Au:N/C:P/I:P/A:P - Weakness
- CWE-125
- Updated
- 2026-11-02
CVE List No score
An out-of-bounds read was addressed with improved input validation.
- Record
CVE-2019-8641- Updated
- 2026-11-02
EUVDEUVD-2019-18031 No score
An out-of-bounds read was addressed with improved input validation.
- Record
EUVD-2019-18031- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-27cj-jh44-8xw6 No score
An out-of-bounds read was addressed with improved input validation. This issue is fixed in iOS 12...
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. A remote attacker may be able to cause unexpected application termination or arbitrary code execution.
- Record
GHSA-27cj-jh44-8xw6- Updated
- 2026-11-02
Affected products
Public exploits
Links only. Every CVE stores no exploit code.
| Source | Link | Date |
|---|---|---|
| Exploit-DB | iMessage - Decoding NSSharedKeyDictionary Can Read Object Out of Bounds | 2019-09-24 |
| Exploit-DB | iMessage - Decoding NSSharedKeyDictionary can read ObjC Object at Attacker Controlled Address | 2019-11-11 |
| PoC in GitHub | chia33164/CVE-2019-8641-reproduction | 2020-05-29 |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases, products | EUVD | |
| first indexed | CVE List, Exploit-DB, GitHub Advisories, NVD, PoC in GitHub |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2019-8641 is a critical vulnerability (CVSS 9.8) in Apple Ios, published December 18, 2019. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 17.1%, the 97th percentile. No source names a fixed version.