Security readout for executives and security teams
CVE-2021-30936 is a WebKit memory safety flaw. A victim processing malicious web content could trigger arbitrary code execution. Apple fixed it across Safari and multiple Apple operating systems in late 2021 updates. The sources do not show known active exploitation. Exposure is likely where users run outdated Safari, iOS, iPadOS, macOS, tvOS, watchOS, or WebKitGTK/WPE packages that predate the referenced fixes. Internet-facing browsing activity increases relevance because the trigger is malicious web content. Treat this as a high-priority client-side patching issue. There is no sourced evidence of active exploitation, but arbitrary code execution through web content is business-relevant and broadly exposed through normal browsing behavior. Mitigation focus: Update Apple devices to the fixed releases or later.; Update Safari to 15.2 or later where applicable.; Apply WebKitGTK/WPE updates from the relevant Linux distribution advisories..
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
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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-2021-30936 mapping review
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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.