Hyper-V Penetration Testing
Hyper-V hosts are domain members, which is convenient and consequential. A Domain Admin compromise is a hypervisor compromise, and the path frequently runs the other way too. CREST-certified testers, fixed price from £3,230, scoped in 24 hours.
- Unlimited retesting
- No rescheduling or cancellation fees
- Fixed quote within 24 hours
“I would highly recommend EJN Labs to any organisation seeking reliable, detailed, and well-managed penetration testing services, particularly for government or enterprise-level projects.”
Imran SaghirProject Lead, SquareOne“There wasn’t another company we could find that could deliver what we needed in the timeframe we needed. The client loved it, and we got instant ROI from the engagement.”
Dan WilcocksonCo-Founder, CelloriUnlike a standalone hypervisor, Hyper-V hosts are usually domain joined and managed with domain credentials. That means the identity boundary between your directory and your virtualisation platform is thin, and compromise of one tends to deliver the other.
Why Hyper-V and Active Directory share a fate
We test that relationship deliberately. Which groups hold local administrator on the hosts, whether constrained delegation is configured safely, whether an account with Hyper-V Administrators membership can reach more than intended, and what a compromised host yields in credentials.
Then the ordinary questions: management exposure, guest to host boundaries, storage reachability on SMB or iSCSI, and whether the backup product’s service account can quietly delete everything it protects.
ISO 27001, SOC 2, PCI DSS and Cyber Essentials Plus audits accept manual penetration test evidence. Scan-only evidence is generally insufficient.
HOSTS, DELEGATION + GUESTS
What we actually pen test on a Hyper-V estate
Manual pen testing across host and cluster exposure, delegation and administrative access, guest isolation, management integration and storage reach.
Host and cluster exposure
What is reachable on the hosts from user networks, management protocols including WinRM and RDP, cluster network separation, and whether live migration traffic is encrypted or exposed.
Delegation and administrative access
Local administrator and Hyper-V Administrators membership, constrained and unconstrained delegation configuration, credential caching on hosts, and whether host compromise yields domain credentials.
Guest isolation and boundaries
Whether a compromised guest can reach the host or other guests, integration services and their surface, virtual switch isolation, and whether nested virtualisation widens anything.
Management integration
System Center Virtual Machine Manager or Windows Admin Center access and privilege, service account scope, and whether management tooling is reachable from networks it need not be.
Storage and SMB reach
Where virtual hard disks live, whether the share or LUN is reachable by accounts that should not have it, permissions on the storage path, and whether a guest can reach its own or another’s disk file.
Backup and snapshot handling
Backup service account privilege, whether backups can be deleted with the same credential that manages the estate, checkpoint handling, and encryption at rest.
METHODOLOGY
Hyper-V Penetration Testing: From Scope to Attestation
CREST-aligned methodology built on OWASP Web Security Testing Guide, OWASP ASVS, NIST SP 800-115, and PTES. Each finding maps to all four standards plus your specific compliance regime.
Reconnaissance
Application mapping, technology fingerprinting, content discovery, parameter enumeration, authentication-flow analysis, role-matrix construction.
Vulnerability Assessment
Authenticated and unauthenticated automated scanning across every user role, plus targeted manual checks for known weakness patterns.
Manual Exploitation
Hands-on testing by a CREST-certified pentester. Business-logic exploitation, chained vulnerabilities, privilege escalation, impact validation.
Reporting + Retest
Executive summary, technical report with CVSS scores and reproduction steps, walkthrough call, free retest after remediation, attestation letter.
CREDENTIALS
Verified Accreditations Auditors Accept
Every credential below is independently verifiable. UK procurement teams, FCA supervisors, ISO 27001 / SOC 2 auditors, and cyber insurance underwriters all recognise these standards.
GET YOUR QUOTE
Get a CREST Hyper-V pen test quote in 24 hours
A fixed-price quote back in one business day, from a named CREST assessor. No sales pipeline, no chasing.
- CREST and IASME accredited. Testing your auditors and clients already recognise.
- Fast-track testing within 24 hours where required. Free retest of every fix included.
- Live findings via your client portal, not a four-week PDF.
- Fixed price from £3,500 for a single-role, single-app scope, agreed up front. Most engagements run £5,000 and up. No day-rate surprises.
Dan WilcocksonCo-Founder, CelloriUnder NDA Further named references available on a scoping call.
- We reply within one business day with a fixed-price quote from a named CREST assessor.
- You approve the scope and we book a start date, usually within 24 hours.
- Live findings land in your client portal as we test, with a free retest of every fix.
Get your fixed pen test quote in 24 hours
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COMPLIANCE READY
Reports Mapped to Every Framework
Findings are explicitly tagged to the relevant control reference. Your audit team submits the report directly without translation work.
ISO 27001:2022
Annex A.8.8 management of technical vulnerabilities plus A.5.15-5.18 and A.8.2-8.5 access control validation.
SOC 2 Type I & II
CC6 logical access, CC7 system operations, CC8 change management evidence.
PCI DSS
Requirement 11.4 application penetration testing across cardholder data environments, including ecommerce penetration testing for online retail platforms.
FCA SYSC
SYSC 4.1.1R, 6.1.1R, 13 mapped to each finding for FCA-regulated firms.
UK GDPR
Article 32 effectiveness testing, customer-data security controls, ICO-acceptable evidence.
Cyber Essentials Plus
Direct certification through our IASME body status, single-vendor delivery.
PRICING
Transparent Hyper-V Penetration Testing Pricing
Pricing depends on app complexity, user-role count, business-logic depth, and integration surface. The day count flexes; the included deliverables stay the same across all engagements.
3 to 4 testing days
Single user role, basic CRUD application, marketing website with auth. Around 5 working days from kickoff to report.
Get a fixed quote4 to 6 testing days
Multi-role SaaS, business application with payment integration. Around 8 to 12 working days from kickoff to report.
Get a fixed quote6 to 8 testing days
Multi-tenant platform, complex authorisation matrix, integration-heavy applications. Around 15 to 20 working days from kickoff to report.
Get a fixed quotePart of Technologies We Pen Test. These are examples of the stacks we publish pages for, not a complete list. If yours is not here we still test it. Related pages:
BY SECTOR
Hyper-V Penetration Testing for Your Sector
Sector-specialist scoping for UK businesses with sector-specific compliance regimes and threat models.
Fintech & FCA-Regulated
FCA SYSC, Open Banking FAPI 1.0, PSD2 SCA, payment-flow scrutiny, KYC/AML testing.
Fintech sector pageSaaS Companies
SOC 2 Type I & II evidence, multi-tenant boundaries, role escalation, customer-tenant isolation.
SaaS sector pageLaw Firms
SRA Cyber Standard, privileged data, conveyancing fraud defence, partner-tier procurement.
Law firm sector pageHealthcare
NHS DTAC, DSP Toolkit v6, UK GDPR Article 32, EHR systems, telehealth platforms.
Healthcare sector pageInsurance
FCA / PRA Operational Resilience, cyber underwriting, claims data, broker portals.
Insurance sector pagePublic Sector
CCS / G-Cloud framework, NCSC-aligned, citizen-facing services, PSN-compliance scrutiny.
Public sector pageWHY EJN LABS
What You Get From Hyper-V Penetration Testing
Six concrete differentiators competitors don’t all match.
CREST-Certified Testers, Verifiable
Every test by a CREST-certified pen tester (CRT, CCT APP, CCT INF where applicable). Verify our company status at crest-approved.org.
24-Hour Startup, Where Required
From signed scope to active testing in a single business day for incident response, audit deadlines, or regulator-driven timelines.
Live Findings, Not 4-Week PDFs
Critical issues reported during testing through your client portal. Your team remediates while testing continues.
Audit-Ready Reports
Executive summary plus full technical report with CVSS scores and explicit framework mappings (ISO 27001, SOC 2, PCI DSS, FCA SYSC).
Free Retests, Standard
Verify remediation of every finding before close-out. Letter of attestation for audit submission included. Most competitors charge £1,500-£3,000 per retest.
UK-Based CREST Testers
Every engagement performed by vetted, UK-based CREST-certified testers, matched to your needs, security clearance, and compliance scope.
FAQ
Frequently Asked
Is this part of an Active Directory assessment?
Related and distinct. We test the hypervisor and its relationship with the directory. A full Active Directory assessment is our internal network penetration testing, and running both together gives the clearest picture of estate risk.
Will testing disrupt virtual machines?
No. We do not stop, checkpoint or migrate machines. Testing reachability, delegation and permission does not require touching a workload.
Do you need domain admin?
No, and we would rather start without it. The useful test begins from an ordinary domain user on a user network, because that is what an attacker has after phishing one person.
What about Azure Stack HCI?
In scope on the same basis. The management surface differs and the questions about delegation, guest isolation and storage reach are the same.
What do we receive?
A report mapped to Cyber Essentials, ISO 27001 and the CIS benchmarks where relevant, a prioritised remediation plan, and unlimited free retesting.
20+ CREST-accredited testing services in one place
Web, mobile, API, cloud, AI, infrastructure, red team. Pick the test that fits your environment.
Get a fixed price for your Hyper-V estate
Tell us roughly how many hosts, whether clustered, and whether internal testing from a user network position is in scope. Fixed-price quote within one business day.
