# CVE-2026-116755: SoftIron HyperCloud: OS Command Injection in Orchestrator via Virtual Machine Template Fields

Status: published. Published: 2026-10-31. Updated: 2026-11-06.

Improper Neutralization of Special Elements used in a Command ('Command Injection') in the Orchestrator component of SoftIron HyperCloud allows an authenticated user with access to the management plane to execute arbitrary operating system commands on hypervisor hosts as the privileged orchestration user. Attacker-controlled virtual machine template content (for example, the VM DESCRIPTION field) is delivered to hosts through a shell here-document whose terminator is not quoted, so shell expansion and here-document terminator injection are performed on that content during virtual machine lifecycle operations such as deploy, migrate, and network setup. Exploitation requires valid credentials, access to the management plane (owning a virtual machine alone is not sufficient), and a lifecycle operation that reaches the affected host. This issue affects the Orchestrator component of SoftIron HyperCloud from 1.0 through 2.6.17 and is fixed in 2.6.18.

## Remediation

- fix: Upgrade to SoftIron HyperCloud 2.6.18 or later. (source: CNA: SoftIron)
- workaround: No complete workaround exists prior to upgrading. To reduce exposure, restrict access to the management plane and restrict creation and modification of virtual machine templates and template fields (such as DESCRIPTION) to trusted administrators, and limit which users can trigger virtual machine lifecycle operations (deploy, migrate, network setup). In deployments where the management plane is air-gapped or otherwise not reachable from a general network, the practical exposure is correspondingly reduced. (source: CNA: SoftIron)

## Affected products and versions

- SoftIron / HyperCloud: ≥ 1.0; < 2.6.18 (affected, semver). Source: CNA: SoftIron

## Severity and prioritization

- CVSS 3.1: 7.4 (high); CVSS:3.1/AV:A/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H; source: CNA: SoftIron

- CVSS 3.1: 7.4 (high); CVSS:3.1/AV:A/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H; source: NVD: 0a72a055-908d-47f5-a16a-1f09049c16c6

- CISA KEV: No listing in collected sources

- EPSS: 0.93% as of 2026-11-05; percentile 60.71%

- SSVC: exploitation none; automatable no; technical impact total; source ADP: CISA-ADP

- Weaknesses: CWE-78

## Exploit evidence

No exploit evidence in collected sources. This is not proof of no exploitation.

## References

- https://advisories.softiron.cloud/ (CNA: SoftIron)

- https://advisories.softiron.cloud/ (0a72a055-908d-47f5-a16a-1f09049c16c6)

## Provenance

- CNA: SoftIron: https://www.cve.org/CVERecord?id=CVE-2026-116755; retrieved 2026-11-06; source updated 2026-11-06

- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-116755; retrieved 2026-11-03; source updated 2026-11-02

- FIRST EPSS: https://api.first.org/data/v1/epss?cve=CVE-2026-116755; retrieved 2026-11-06; source updated Not reported

Revision: 48e91b8154b248b1f9af033f6eca401063bde40b850fba53ffff928d58908882

Canonical: https://y2.dev/cve/CVE-2026-116755

## Agent and API access

Public CVE pages, Markdown, and JSON are free to read without an account or API key.

- Public catalog: https://y2.dev/cve/index.json. Follow nextCursor with the same search, filters, sort, and limit (1–100). A null cursor marks the end.

- WebMCP: search_cve_disclosures, get_cve_disclosure, get_cve_page_markdown, get_y2_cve_access. Available in compatible browsers.

- Cyber API: https://api.y2.dev/api/v2/cyber/cves and https://api.y2.dev/api/v2/cyber/cves/{cveId}.

- Y2 Pro or Elite: create a workspace API key with the intel:cyber scope and send Authorization: Bearer <Y2_API_KEY>. Setup: https://y2.dev/docs/api/create-key.

- x402: Pay per request without an account or API key. Omit Authorization, read the HTTP 402 PAYMENT-REQUIRED challenge, validate its current requirements, and retry with PAYMENT-SIGNATURE through an authorized payment client. These browser tools never make payments. Guide: https://y2.dev/docs/api/x402.

- OpenAPI: https://y2.dev/api/openapi.yaml. Agent access metadata: https://y2.dev/cve/agent.json.

Collected public records only. Check source status for coverage and freshness.