Security readout for executives and security teams
Plain-English summary
CVE-2021-30912 is a macOS permissions flaw that could let a malicious application access a user's Keychain items. Keychain can contain passwords, certificates, and other sensitive secrets, so compromise could support broader account or system access.
Executive priority
Treat this as a credential-protection issue for Mac fleets. It is not KEV-listed in the provided data, but Keychain exposure can create high business impact if affected systems store administrative, developer, or customer-access credentials.
Technical view
Apple describes the issue as incorrect permissions logic in macOS, fixed with improved permissions logic. The stated impact is that a malicious application may gain access to a user's Keychain items. Public sources here do not provide CVSS, CWE, or affected version details beyond macOS and the fixed releases.
Likely exposure
Exposure is likely limited to macOS systems that have not installed macOS Monterey 12.0.1, macOS Big Sur 11.6.1, or Security Update 2021-007 Catalina, depending on their release line.
Exploitation context
The provided sources do not show active exploitation, and the CVE is not listed as KEV in the bundle. Exploitation would require a malicious application on the affected Mac, based on Apple's stated impact.
Researcher notes
Evidence is sparse: Apple provides impact and fixed releases but no technical root-cause detail, CVSS score, CWE, affected-version matrix, or exploit indicators in the provided bundle. Validate exposure by patch level rather than attempting exploitation.
Mitigation direction
- Update Monterey systems to macOS Monterey 12.0.1 or later.
- Update Big Sur systems to macOS Big Sur 11.6.1 or later.
- Apply Security Update 2021-007 on Catalina systems.
- Check Apple guidance for unsupported or differently managed macOS versions.
- Prioritize systems used for privileged administration or sensitive credential storage.
Validation and detection
- Inventory managed Macs by macOS release and installed security update level.
- Confirm Monterey hosts are at 12.0.1 or later.
- Confirm Big Sur hosts are at 11.6.1 or later.
- Confirm Catalina hosts have Security Update 2021-007 installed.
- Review MDM or endpoint management reports for update failures.
Public sources used
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.
CVE-2021-30912 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/HT212869CVE reference · x_refsource_MISC
- https://support.apple.com/en-us/HT212871CVE reference · x_refsource_MISC
- https://support.apple.com/en-us/HT212872CVE reference · x_refsource_MISC
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.