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CVE-2021-30846A memory corruption issue was addressed with improved memory handling. This issue is fixed in iOS 14.8 and iPadOS 14.8, Safari 15, tvOS…
- 7.8HighCVSS base score
- 1.4%Exploitation in 30 daysEPSS · top 28% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
A memory corruption issue was addressed with improved memory handling. This issue is fixed in iOS 14.8 and iPadOS 14.8, Safari 15, tvOS 15, iOS 15 and iPadOS 15, watchOS 8. Processing maliciously crafted web content may lead to arbitrary code execution.
Timeline
ID reserved
By apple
- 6 months later
· 6 months later
Published
- 3 years later
· 3 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 | High7.8 | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 1.4% · top 28% of all CVEs (13 Nov 2026)
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.8.
Affected products
- affected unspecified – < 14.8
- affected unspecified – < 15
- affected unspecified – < 15
- affected unspecified – < 15
- affected unspecified – < 8
References
References18
- https://support.apple.com/en-us/HT212807 (opens in a new tab)x_refsource_MISCx_transferred
- https://support.apple.com/en-us/HT212814 (opens in a new tab)x_refsource_MISCx_transferred
- https://support.apple.com/en-us/HT212819 (opens in a new tab)x_refsource_MISCx_transferred
- https://support.apple.com/en-us/HT212815 (opens in a new tab)x_refsource_MISCx_transferred
- https://support.apple.com/en-us/HT212816 (opens in a new tab)x_refsource_MISCx_transferred
- [oss-security] 20211026 WebKitGTK and WPE WebKit Security Advisory WSA-2021-0006 (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- [oss-security] 20211027 Re: WebKitGTK and WPE WebKit Security Advisory WSA-2021-0006 (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- [oss-security] 20211027 Re: WebKitGTK and WPE WebKit Security Advisory WSA-2021-0006 (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- 20211027 APPLE-SA-2021-10-26-8 Additional information for APPLE-SA-2021-09-20-5 Safari 15 (opens in a new tab)mailing-listx_refsource_FULLDISCx_transferred
- 20211027 APPLE-SA-2021-10-26-10 Additional information for APPLE-SA-2021-09-20-2 watchOS 8 (opens in a new tab)mailing-listx_refsource_FULLDISCx_transferred
- 20211027 APPLE-SA-2021-10-26-11 Additional information for APPLE-SA-2021-09-20-3 tvOS 15 (opens in a new tab)mailing-listx_refsource_FULLDISCx_transferred
- 20211027 APPLE-SA-2021-10-26-9 Additional information for APPLE-SA-2021-09-20-1 iOS 15 and iPadOS 15 (opens in a new tab)mailing-listx_refsource_FULLDISCx_transferred
- [oss-security] 20211027 Re: WebKitGTK and WPE WebKit Security Advisory WSA-2021-0006 (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- https://support.apple.com/kb/HT212869 (opens in a new tab)x_refsource_CONFIRMx_transferred
- DSA-4995 (opens in a new tab)vendor-advisoryx_refsource_DEBIANx_transferred
- DSA-4996 (opens in a new tab)vendor-advisoryx_refsource_DEBIANx_transferred
- FEDORA-2021-131360fa9a (opens in a new tab)vendor-advisoryx_refsource_FEDORAx_transferred
- FEDORA-2021-483d896d1d (opens in a new tab)vendor-advisoryx_refsource_FEDORAx_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-2021-17763 (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-2021-30846)Record last updated .