Security readout for executives and security teams
Plain-English summary
CVE-2026-0758 is a local privilege escalation flaw in mcp-server-siri-shortcuts. A person or malware that already has low-level access to the machine could abuse a shortcut name input to run code as the service account. This is high risk where the service runs with meaningful privileges.
Executive priority
Prioritize this for environments where mcp-server-siri-shortcuts runs on user workstations, developer systems, or hosts with privileged service accounts. It is not described as remotely exploitable, but it can increase the impact of an initial compromise.
Technical view
The flaw is CWE-78 command injection in the shortcutName parameter. ZDI reports insufficient validation of a user-supplied string before a system call, enabling arbitrary code execution in the service account context. The CVSS 3.0 score is 7.8 with local access and low privileges required.
Likely exposure
Exposure is limited to installations of mcp-server-siri-shortcuts at the referenced affected version or commit: 49d67127ba8373300d0c9d94c059b4c873bf2ef8. The source bundle does not identify broader version ranges, package ecosystems, or default deployment details.
Exploitation context
Sources do not report active exploitation, and the CVE is not marked KEV. Exploitation requires local low-privileged code execution first, so this is most relevant after initial compromise, insider misuse, or malware already running on a host.
Researcher notes
Evidence is currently narrow: one affected commit/version is listed, and no patch information is provided in the supplied sources. Focus validation on confirming installed builds, service privilege context, and whether shortcutName reaches a system call without safe validation.
Mitigation direction
- Check the ZDI advisory and project/vendor channels for an official fix or updated release.
- Inventory systems running mcp-server-siri-shortcuts and identify the referenced affected commit/version.
- Restrict who can run or interact with the service on shared systems.
- Run the service with the least privileges possible for its business function.
- Remove or disable the service where it is not required.
Validation and detection
- Confirm whether mcp-server-siri-shortcuts is installed on macOS hosts or developer workstations.
- Record the installed version or commit and compare it with the affected reference.
- Review service account privileges and whether compromise would grant sensitive access.
- Check logs for unusual shortcutName values or unexpected child process activity.
- Track vendor or project advisories for patch availability and retest after updating.
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-78: Command execution behavior lookup
Command injection weaknesses can lead defenders to review execution techniques and command interpreter telemetry. 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 lookupExecution 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 lookupPrivilege behavior lookup
The CVE wording references privilege impact, so privilege escalation and authorization behavior review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2026-0758 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
- High
- CVSS
- 7.8 (3.0)
- Known Exploited
- No
- Published
Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
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:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H1.85.9Primary CVE scoreVulnerability scoring details
Base CVSS 3.0 score
7.8HighVector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source materials
- CVE List V5 sourceCVE List V5
- ZDI-26-024CVE reference · x_research-advisory
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.
Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.