Vulnerability Intelligence Report
Contrast before 1.16.0 Remote Attestation Relay Attack
CVE-2026-100835
Contrast before 1.16.0 is susceptible to remote attestation relay attacks. Contrast accepted any TEE attestation report that verified correctly and contained the expected firmware patch levels and software measurements, regardless of which machine produced it, so attestation was not bound to specific, physically trusted hardware. An attacker who can both intercept network traffic between the CLI and the Coordinator (or between the Coordinator and an attested component) and forge reports or extract secrets from any single TEE machine under their physical control can relay such a report to impersonate a Contrast Coordinator or a Contrast workload, defeating identity verification in Contrast's attested TLS (aTLS).
No Active Exploit Signals
CVSS Base Score
9.1
CRITICAL
EPSS Probability:0.22%
Executive Threat Verdict
Evaluating...
Evaluating Threat Landscape...
Assessing known weaponization, exploitation telemetry, and federal advisories.
Attack Surface
—
Authentication
—
Weaponization
—
SSVC Action
—
Weaknesses (CWE)
CWE-295 ↗Improper Certificate Validation
Affected Products & Versions
| Vendor | Product | Affected Versions |
|---|---|---|
| edgelesssys | contrast | 0 < 1.16.0 (affected), 1.16.0 (unaffected) |
References & Technical Advisories
No reference links found.
Threat Intelligence Signals
EPSS Score
0.217%
GitHub Advisory
Identity & Timeline
| Status | PUBLISHED |
| Assigning Authority | VulnCheck · Bug Bounty Provider · USA |
| Reserved | 2026-09-26T23:23:03 |
| Published | 2026-09-27T01:28:33 |
| Patch Date | 2026-07-29 |
| Last Updated | 2026-09-30T15:16:05 |
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