CVE-2026-73025

CRITICAL

Published Sep 8, 2026 Modified Sep 9, 2026 CWE-1390

Description

Weak authentication in Windows iSCSI allows an unauthorized attacker to bypass a security feature over a network.

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CVSS v3.1 Score

9.8

CRITICAL

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

EPSS — Exploit Prediction

0.0092

Probability of exploitation

0.59%

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-1390 CWE-1390

References

Other References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-73025

Frequently Asked Questions

What is CVE-2026-73025? +

Weak authentication in Windows iSCSI allows an unauthorized attacker to bypass a security feature over a network. It has a CVSS v3.1 base score of 9.8 (CRITICAL).

How severe is CVE-2026-73025? +

CVE-2026-73025 has a CVSS v3.1 score of 9.8 out of 10, rated CRITICAL. This is a critical vulnerability that should be patched immediately. The EPSS score is 0.0092, placing it in the 1th percentile for exploitation probability.

How do I check if I'm vulnerable to CVE-2026-73025? +

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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