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CVE-2020-9983
An out-of-bounds write issue was addressed with improved bounds checking. This issue is fixed in Safari 14.0. Processing maliciously…
- 8.8HighCVSS base score
- 2.2%Exploitation in 30 daysEPSS · top 17% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
An out-of-bounds write issue was addressed with improved bounds checking. This issue is fixed in Safari 14.0. Processing maliciously crafted web content may lead to code execution.
Timeline
ID reserved
By apple
- 8 months later
· 8 months later
Published
- 4 years later
· 4 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 3.1 | High8.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 2.2% · top 17% of all CVEs (10 Nov 2026)
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 8.8.
Affected products
References
15
- https://support.apple.com/kb/HT211843 (opens in a new tab)x_refsource_CONFIRMx_transferred
- https://support.apple.com/kb/HT211850 (opens in a new tab)x_refsource_CONFIRMx_transferred
- https://support.apple.com/kb/HT211844 (opens in a new tab)x_refsource_CONFIRMx_transferred
- https://support.apple.com/HT211845 (opens in a new tab)x_refsource_MISCx_transferred
- https://support.apple.com/kb/HT211952 (opens in a new tab)x_refsource_CONFIRMx_transferred
- 20201115 APPLE-SA-2020-11-13-5 Additional information for APPLE-SA-2020-09-16-3 Safari 14.0 (opens in a new tab)mailing-listx_refsource_FULLDISCx_transferred
- 20201115 APPLE-SA-2020-11-13-4 Additional information for APPLE-SA-2020-09-16-2 tvOS 14.0 (opens in a new tab)mailing-listx_refsource_FULLDISCx_transferred
- 20201115 APPLE-SA-2020-11-13-3 Additional information for APPLE-SA-2020-09-16-1 iOS 14.0 and iPadOS 14.0 (opens in a new tab)mailing-listx_refsource_FULLDISCx_transferred
- 20201115 APPLE-SA-2020-11-13-6 Additional information for APPLE-SA-2020-09-16-4 watchOS 7.0 (opens in a new tab)mailing-listx_refsource_FULLDISCx_transferred
- [oss-security] 20201123 WebKitGTK and WPE WebKit Security Advisory WSA-2020-0008 (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- DSA-4797 (opens in a new tab)vendor-advisoryx_refsource_DEBIANx_transferred
- FEDORA-2020-145877bcd3 (opens in a new tab)vendor-advisoryx_refsource_FEDORAx_transferred
- https://support.apple.com/kb/HT211935 (opens in a new tab)x_refsource_CONFIRMx_transferred
- FEDORA-2020-e8a7566e80 (opens in a new tab)vendor-advisoryx_refsource_FEDORAx_transferred
- GLSA-202012-10 (opens in a new tab)vendor-advisoryx_refsource_GENTOOx_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)
- EUVD EUVD-2020-30762 (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://cveledger.app/cve/CVE-2020-9983)Record last updated .