Security readout for executives and security teams
Plain-English summary
CVE-2026-0755 is a critical unauthenticated remote code execution issue in gemini-mcp-tool 1.1.2. A remote attacker could make the tool run operating system commands as the service account. For exposed deployments, this can mean full compromise of the host and connected data or services.
Executive priority
Treat as urgent for any exposed installation. The combination of unauthenticated network access and command execution creates a high business risk. If the tool is not deployed or is isolated from untrusted networks, urgency is lower but inventory confirmation is still needed.
Technical view
The flaw is CWE-78 command injection in the execAsync method. User-supplied input is not properly validated before being used in a system call. CVSS 3.0 is 9.8: network exploitable, low complexity, no privileges, no user interaction, with high confidentiality, integrity, and availability impact.
Likely exposure
Exposure is most concerning where gemini-mcp-tool 1.1.2 is reachable over a network, especially from untrusted networks. The source bundle lists only version 1.1.2 as affected and does not define default exposure or deployment patterns.
Exploitation context
The CVE and ZDI advisory state authentication is not required and code executes in the service account context. The provided sources do not state active exploitation, and this CVE is not marked as CISA KEV in the bundle.
Researcher notes
Evidence is limited to the CVE record and ZDI advisory. No official patch, workaround, or exploitation-in-the-wild claim is included in the provided bundle. Avoid assuming other versions are affected unless vendor guidance confirms it.
Mitigation direction
- Identify and prioritize any gemini-mcp-tool 1.1.2 deployments.
- Restrict network access to trusted systems until vendor guidance is confirmed.
- Run the service with least-privilege permissions where operationally possible.
- Monitor vendor and ZDI guidance for patched versions or official mitigations.
- Review logs for unexpected process execution by the service account.
Validation and detection
- Confirm whether gemini-mcp-tool is installed and record its version.
- Determine whether the service is reachable from untrusted networks.
- Identify the operating system account used by the service.
- Review recent logs for abnormal command execution or child processes.
- Track remediation status against official vendor or ZDI updates.
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 lookupCVE-2026-0755 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
- Critical
- CVSS
- 9.8 (3.0)
- Known Exploited
- No
- Published
Vector: CVSS:3.0/AV:N/AC:L/PR:N/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:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H3.95.9Primary CVE scoreVulnerability scoring details
Base CVSS 3.0 score
9.8CriticalVector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Source materials
- CVE List V5 sourceCVE List V5
- ZDI-26-021CVE 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.