What is CVE-2026-121674?

CVE-2026-121674 is a medium-severity vulnerability in Microsoft Powershell 7.6, classified under Insertion of Sensitive Information into Sent Data. CVSS score: 6.1/10. Published 2026-11-10.

How severe is CVE-2026-121674?

Medium severity. CVSS v3 base score is 6.1 out of 10.

Vulnerability in Microsoft Powershell 7.6

CVE-2026-121674

Insertion of sensitive information into sent data in Microsoft PowerShell Core allows an unauthorized attacker to disclose information over a network.

Published 2026-11-10 · last modified 2026-11-10.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:N/A:N.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Weakness classification (CWE)

CWE-201 — Insertion of Sensitive Information into Sent Data

References

msrc.microsoft.com/update-guide/vulnerability/CVE-2026-121674 (vendor-advisory, patch)

Frequently asked questions

What is CVE-2026-121674?: CVE-2026-121674 is a medium-severity vulnerability in Microsoft Powershell 7.6, classified under Insertion of Sensitive Information into Sent Data. CVSS score: 6.1/10. Published 2026-11-10.
How severe is CVE-2026-121674?: Medium severity. CVSS v3 base score is 6.1 out of 10.