CVE-2020-9823
This issue was addressed with improved checks. This issue is fixed in iOS 13.5 and iPadOS 13.5....
This issue was addressed with improved checks. This issue is fixed in iOS 13.5 and iPadOS 13.5. Users removed from an iMessage conversation may still be able to alter state.
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
- None
- Integrity
- High
- Availability
- None
Exploit likelihood
What each source reports
NVD Score used
This issue was addressed with improved checks. This issue is fixed in iOS 13.5 and iPadOS 13.5. Users removed from an iMessage conversation may still be able to alter state.
- Record
CVE-2020-9823- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N - CVSS 2.0
- 5.0 Medium
AV:N/AC:L/Au:N/C:N/I:P/A:N - Updated
- 2026-11-02
CVE List No score
This issue was addressed with improved checks. This issue is fixed in iOS 13.5 and iPadOS 13.5. Users removed from an iMessage conversation may still be able to alter state.
- Record
CVE-2020-9823- Updated
- 2026-11-02
EUVDEUVD-2020-30602 No score
This issue was addressed with improved checks. This issue is fixed in iOS 13.5 and iPadOS 13.5. Users removed from an iMessage conversation may still be able to alter state.
- Record
EUVD-2020-30602- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-4ff7-c847-2h7q
This issue was addressed with improved checks. This issue is fixed in iOS 13.5 and iPadOS 13.5....
This issue was addressed with improved checks. This issue is fixed in iOS 13.5 and iPadOS 13.5. Users removed from an iMessage conversation may still be able to alter state.
- Record
GHSA-4ff7-c847-2h7q- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N - Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases, products | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2020-9823 is a high vulnerability (CVSS 7.5) in Apple Ios, published June 9, 2020. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.81%, the 57th percentile. No source names a fixed version.