CVE-2026-8671

Secret exposure through downloadable agent logs

Published May 22, 2026 · Updated May 22, 2026

Sensitive-data logging in Syslink Software AG Avantra before 25.3.0 allows remote authenticated users to obtain encrypted secrets from agent logs. The vendor states that agent log files contain encrypted secrets but does not identify the logging call, secret type, or event that writes them. Access requires an adjacent-network, highly privileged account with log-download permission or local access to the log files; exposure is limited to secret material present there.

CVSS severity7.5
High
EPSS probability0.22%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Sensitive-data logging in Syslink Software AG Avantra before 25.3.0 allows remote authenticated users to obtain encrypted secrets from agent logs. The vendor states that agent log files contain encrypted secrets but does not identify the logging call, secret type, or event that writes them. Access requires an adjacent-network, highly privileged account with log-download permission or local access to the log files; exposure is limited to secret material present there.

The record

CVE
CVE-2026-8671
Published
May 22, 2026
Updated
May 22, 2026
Vendor
Syslink Software AG
Product
Avantra
Classifications
CWE-532, CAPEC-131, T1005
Attack vector
adjacent
Privileges
authenticated

Timeline

How it unfolded

  1. May 22, 2026CVE publishedPublication date reported by the CVE source.
  2. May 22, 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=0 <25.3.0

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesauthenticated

What is affected?

Syslink Software AG · Avantraversion=0 <25.3.0

Published CVSS scores

7.5NIST National Vulnerability DatabaseCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
7.5Switzerland Government Common Vulnerability ProgramCVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:C/C:L/I:H/A:L

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.

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No observations available

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

Weakness, pattern, technique

CWE-532Insertion of Sensitive Information into Log File
CAPEC-131Resource Leak Exposure
T1005Data from Local System

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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