CVE-2026-84736Network attack vector

Credential interception via disabled TLS verification

Published Sep 3, 2026 · Updated Sep 3, 2026

Improper certificate validation in Eclipse aeriOS Federator development builds allows attackers to intercept outbound HTTPS traffic. When TLS_CERTIFICATE_VALIDATION is unset or false, the Federator configures its HTTP transport to skip server-certificate verification. Man-in-the-middle attackers on the outbound network path can impersonate external services and read OAuth client credentials and bearer tokens.

CVSS severity8.3
High
EPSS probability0.17%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper certificate validation in Eclipse aeriOS Federator development builds allows attackers to intercept outbound HTTPS traffic. When TLS_CERTIFICATE_VALIDATION is unset or false, the Federator configures its HTTP transport to skip server-certificate verification. Man-in-the-middle attackers on the outbound network path can impersonate external services and read OAuth client credentials and bearer tokens.

The record

CVE
CVE-2026-84736
Published
Sep 3, 2026
Updated
Sep 3, 2026
Vendor
The Eclipse Foundation
Product
Eclipse aeriOS
Classifications
CWE-295, T1557
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 3, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 3, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=d730017a4a0e2a31feba6258bd780efbce7e0d5d <9c63b60becc9873b0195ff9cd6582b69cb12d4f2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

The Eclipse Foundation · Eclipse aeriOSversion=d730017a4a0e2a31feba6258bd780efbce7e0d5d <9c63b60becc9873b0195ff9cd6582b69cb12d4f2

Published CVSS scores

8.3Eclipse FoundationCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-295Improper Certificate Validation
T1557Adversary-in-the-Middle

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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