CVE-2026-8673

Name: CVE-2026-8673
Creator: NVD / NIST
Published: 2026-05-22T14:16:30.07+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.1/10EPSS 0.19%

Last modified Jun 17, 2026

CVE-2026-8673 is a critical-severity vulnerability rated 9.1/10 on the CVSS scale. Unprotected transport of credentials vulnerability in syslink software AG Avantra on Linux, Windows allows Sniffing Attacks. This issue affects Avantra: before 25.3.0.. EPSS estimates a 0.19% chance of exploitation in the next 30 days.

Description

Unprotected transport of credentials vulnerability in syslink software AG Avantra on Linux, Windows allows Sniffing Attacks. This issue affects Avantra: before 25.3.0.

Metrics

CVSS 3.1

9.1/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

EPSS Probability

0.19%

9.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-523

Affected Software

Vendor	Product	Versions
Avantra	Avantra	< 25.3.0

References

https://support.avantra.com/hc/en-us/articles/5535621927071Mitigation, Vendor Advisory

Timeline

Published: May 22, 2026
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2026-8673?

Unprotected transport of credentials vulnerability in syslink software AG Avantra on Linux, Windows allows Sniffing Attacks. This issue affects Avantra: before 25.3.0.

How severe is CVE-2026-8673?

CVE-2026-8673 has a CVSS score of 9.1/10 (CRITICAL severity). The EPSS model estimates a 0.19% probability of exploitation in the next 30 days.

How do I fix CVE-2026-8673?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2026-8673?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST