Paying for Proof: What a Federal Penetration Test Costs and What It Buys

Every federal system owner already pays for vulnerability scanning. The output is a report of thousands of findings, ranked by a generic severity score that knows nothing about the agency's network or what an attacker could actually reach. The scan is cheap. Acting on it is not, because remediation staff and budgets are finite and the report does not say where they should go first.

A penetration test with manual validation answers that question. The budget question is what it costs, and when the answer is worth paying for.

The New Reason Precision Matters

In June 2026, CISA issued Binding Operational Directive 26-04 (opens in a new tab), which replaced the old KEV and internet-facing remediation directives for civilian agencies. Instead of one deadline for every known exploited vulnerability, it sets remediation clocks from four inputs: whether the asset is publicly exposed, whether the flaw is in CISA's Known Exploited Vulnerabilities catalog, whether exploitation can be automated, and whether it gives an attacker total control. The clocks run from three days, with forensic triage for the worst cases, to 14 days, 60 days, or the next system upgrade.

Three-day remediation is expensive. It pulls engineers off planned work, forces emergency change windows and, for the highest tier, adds a forensic check for compromise. When a scanner puts a finding on the wrong clock, the agency either spends emergency money on something that was not reachable or misses a deadline on something that was. Validation is how a program establishes, with evidence, whether an asset is really exposed and whether the flaw is really exploitable as configured.

Three Illustrative Engagements

The figures below are a planning illustration, not quotes and not results from any engagement. Each price is the midpoint of market-norm ranges for its components.

A retest after remediation adds 15% to 30% of the original price, roughly $4.5K, $15K or $22.5K for the three scopes. It is worth buying up front, because it produces the evidence that a finding is actually closed, which is what an assessor or Authorizing Official will ask for.

What Moves the Price

Two variables dominate. The first is the size of the environment: the number of hosts, applications, boundaries and cloud or identity layers in scope. The second is the depth of exploitation. Testing that stops at validation costs less than testing that follows an attacker's path from the first foothold through lateral movement and privilege escalation, and a full red team exercise costs more again.

Other factors push the price up at the margin: requirements for cleared testers, heavy documentation for High-baseline systems, compressed schedules and end-of-year urgency. Federal engagements generally cost more than commercial ones for the same footprint because of the rules of engagement, evidence handling and assessment-ready reporting they require.

What the Money Buys

The deliverable is not a tool export. A properly scoped engagement produces:

• a findings report with evidence for every confirmed vulnerability;
• a remediation roadmap ranked by real risk and by the applicable remediation clock, not raw CVSS;
• an executive briefing that translates findings into mission terms;
• an evidence package the agency can put in its assessment and audit files.

It does not buy an ATO, a CMMC certification or a FedRAMP authorization. It produces the tested evidence that supports them. And it does not buy remediation, which stays with the agency's engineers or a separate effort.

When It Is Worth Paying For

The engagement earns its cost when a deadline makes precision valuable: an RMF assessment or reauthorization, a FISMA annual assessment, an IG finding on vulnerability management, or a backlog of scanner findings that now has BOD 26-04 clocks attached. It is less valuable when nothing depends on the answer.

Civilian agencies should also price the free alternative. CISA offers risk and vulnerability assessments to federal agencies at no cost, and where its schedule fits the agency's deadline, that is a sensible choice. The technical method behind a validated test (opens in a new tab) is the same either way; what an outside engagement adds is the agency's own schedule.

Fitting It Into the Budget

Most single-system tests fall well under the $350,000 simplified acquisition threshold (opens in a new tab), so they can be bought quickly as open-market purchases with one-year O&M funds. Fixed pricing by scope tier lets the program office choose its spend: an external-only test for a perimeter question, a system-level test ahead of an assessment, or a comprehensive assessment when leadership needs the whole picture. Programs preparing a package can see where testing evidence fits in an ATO compliance roadmap for program offices (opens in a new tab).

Avalon's Vulnerability Assessment & Exploitation service is priced firm fixed price by scope tier, governed by a signed rules of engagement, and delivered as validated findings with a remediation roadmap ranked by real risk. It tells your program office which findings an attacker could use, before a remediation clock or an assessor asks.