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CVE-2021-1809
A memory corruption issue was addressed with improved validation. This issue is fixed in Security Update 2021-002 Catalina, Security…
High7.5EPSS 1.8%
- Published
- Updated
- Reserved
- Assigned by
- apple
Description
A memory corruption issue was addressed with improved validation. This issue is fixed in Security Update 2021-002 Catalina, Security Update 2021-003 Mojave, iOS 14.5 and iPadOS 14.5, watchOS 7.4, tvOS 14.5, macOS Big Sur 11.3. A malicious application may be able to read restricted memory.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 3.1 | High7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N |
- EPSS (exploitation in 30 days)
- 1.8% · top 22% of all CVEs (6 Nov 2026)
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The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.5.
Weakness
- A malicious application may be able to read restricted memory
- CWE-787 (opens in a new tab)All about CWE-787 and its CVEs
Affected products
References (6)
- https://support.apple.com/en-us/HT212317 (opens in a new tab)x_refsource_MISCx_transferred
- https://support.apple.com/en-us/HT212323 (opens in a new tab)x_refsource_MISCx_transferred
- https://support.apple.com/en-us/HT212324 (opens in a new tab)x_refsource_MISCx_transferred
- https://support.apple.com/en-us/HT212325 (opens in a new tab)x_refsource_MISCx_transferred
- https://support.apple.com/en-us/HT212326 (opens in a new tab)x_refsource_MISCx_transferred
- https://support.apple.com/en-us/HT212327 (opens in a new tab)x_refsource_MISCx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2021-1809)Record last updated .