Security readout for executives and security teams
CVE-2021-30953 is a WebKit-related memory safety issue where malicious web content could cause arbitrary code execution. Apple fixed it across Safari and major Apple operating systems in December 2021 releases. The source bundle does not provide CVSS, CWE, or confirmed exploitation evidence. Exposure is most likely on Apple endpoints or browsers below the fixed versions listed by Apple. The linked WebKitGTK, WPE WebKit, Debian, and Fedora advisories indicate downstream WebKit package relevance, but this bundle does not provide exact affected package versions. Treat this as a patching priority for fleets that browse the web or use WebKit-based applications. There is no source-backed active exploitation claim here, but arbitrary code execution from malicious web content is a material endpoint risk. Mitigation focus: Upgrade Apple devices to the fixed OS or Safari versions listed by Apple.; Check Debian and Fedora advisories for applicable WebKit package updates.; Update WebKitGTK or WPE WebKit where those advisories apply..
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
Execution behavior lookup
The CVE wording references code or command execution, so execution technique review may help defensive triage. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2021-30953 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS and timeline data
No CVSS vectors or timeline events were available in the normalized CVE source material.
Source materials
- CVE List V5 sourceCVE List V5
- https://support.apple.com/en-us/HT212975CVE reference · x_refsource_MISC
- https://support.apple.com/en-us/HT212976CVE reference · x_refsource_MISC
- https://support.apple.com/en-us/HT212978CVE reference · x_refsource_MISC
- https://support.apple.com/en-us/HT212980CVE reference · x_refsource_MISC
- https://support.apple.com/en-us/HT212982CVE reference · x_refsource_MISC
- FEDORA-2022-25a98f5d55CVE reference · vendor-advisory, x_refsource_FEDORA
- DSA-5061CVE reference · vendor-advisory, x_refsource_DEBIAN
- DSA-5060CVE reference · vendor-advisory, x_refsource_DEBIAN
- FEDORA-2022-f7366e60cbCVE reference · vendor-advisory, x_refsource_FEDORA
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.