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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
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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%

Identity & Timeline

StatusPUBLISHED
Assigning AuthorityVulnCheck · Bug Bounty Provider · USA
Reserved2026-09-26T23:23:03
Published2026-09-27T01:28:33
Patch Date2026-07-29
Last Updated2026-09-30T15:16:05

LINK COPIED TO CLIPBOARD