CVE-2026-8673

MEDIUM
Published May 22, 2026 Modified May 22, 2026 CWE-523

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.

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CVSS v3.1 Score

5.9
MEDIUM
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:N

EPSS — Exploit Prediction

0.0019
Probability of exploitation
0.09%
Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-523 CWE-523

References

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. It has a CVSS v3.1 base score of 5.9 (MEDIUM).
How severe is CVE-2026-8673? +
CVE-2026-8673 has a CVSS v3.1 score of 5.9 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance. The EPSS score is 0.0019, placing it in the 0th percentile for exploitation probability.
How do I check if I'm vulnerable to CVE-2026-8673? +
You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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