CVE-2026-26143

high

Published 2026-04-14 · Modified 2026-04-27

💬 Discuss on Community ✚ Propose mitigation

CVSS v3

7.8

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

CVSS v4 NEW

—

not yet in upstream

VIR risk

7.8

Description

Improper input validation in Microsoft PowerShell allows an unauthorized attacker to bypass a security feature locally.

Predictions

Exploit likelihood

75%

Patch ETA

—

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

No mitigations published for this CVE yet.

The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.

✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here with source_tier=community-verified.

Application impact

Vendor	Product	Versions	Fixed
microsoft	powershell	`{"startIncluding":"7.4","endExcluding":"7.4.14"}`	`7.4.14`

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-26143

CWEs

CWE-20

Community-verified mitigations for this CVE will appear above when contributors publish them.

Verify integrity in audit chain (admin only). AS-IS.