Security readout for executives and security teams
Plain-English summary
CVE-2026-20662 is an Apple macOS authorization flaw that could let someone with physical access to a locked Mac view sensitive user information. The issue is fixed in macOS Sequoia 15.7.4 and macOS Tahoe 26.3. Business risk is mainly for lost, stolen, shared, or unattended devices.
Executive priority
Treat as a targeted physical-access confidentiality risk, not a broad remote compromise. Patch during normal security update cycles, with faster handling for high-value or travel-exposed Macs.
Technical view
Apple describes this as an authorization issue addressed with improved state management. The CVSS 3.1 score is 4.6 with physical attack vector, low complexity, no privileges, no user interaction, and high confidentiality impact. The vulnerability maps to CWE-200, exposure of sensitive information.
Likely exposure
Exposure is limited to macOS devices running affected versions before the fixed releases. The attacker needs physical access to a locked device, so remote exploitation is not indicated by the provided sources.
Exploitation context
The source bundle does not show CISA KEV listing or any cited evidence of active exploitation. The practical scenario is hands-on access to an unattended, lost, stolen, or shared Mac that remains locked.
Researcher notes
Public details are sparse. Apple states only that improved state management fixed an authorization issue. No exploit mechanics, affected component, or workaround is provided in the source bundle. Avoid assuming impact beyond viewing sensitive user information on a locked device.
Mitigation direction
- Update macOS Sequoia systems to 15.7.4 or later, where applicable.
- Update macOS Tahoe systems to 26.3 or later, where applicable.
- Prioritize devices used by executives, privileged staff, travelers, and shared workspaces.
- Review Apple support guidance for any environment-specific instructions.
Validation and detection
- Inventory macOS endpoints and identify Sequoia and Tahoe devices.
- Confirm installed macOS versions against Apple’s fixed versions.
- Check endpoint management reports for update compliance.
- Review lost, stolen, or shared-device procedures for physical-access risk.
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.
CWE-200: Information exposure and cloud metadata lookup
Information exposure and SSRF weaknesses can make discovery, cloud metadata, and credential material review relevant. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCVE-2026-20662 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
- Medium
- CVSS
- 4.6 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
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 vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N0.93.6Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
4.6MediumVector: CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Source materials
- CVE List V5 sourceCVE List V5
- https://support.apple.com/en-us/126348CVE reference
- https://support.apple.com/en-us/126349CVE reference
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.
Exposure of Sensitive Information to an Unauthorized Actor
Exposure of Sensitive Information to an Unauthorized Actor represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.