Type Vulnerability
CVE-2026-96303 has an estimated ~0.6% chance of attack in 30 days (47.6th percentile) as of 2026-10-22 — probability signal, not confirmed exploitation.
Microsoft
Improperly implemented security check for standard in Microsoft PowerShell allows an unauthorized attacker to bypass a security feature over a network
CVE-2026-96303
What this means
This is rated medium severity (6.5 out of 10). There is no confirmed exploitation of it yet. Ask IT whether Microsoft Powershell is in your estate.
Full vendor description
Improperly implemented security check for standard in Microsoft PowerShell allows an unauthorized attacker to bypass a security feature over a network.
Scoring and exploitation
6.5/ 10
CVSS 3.1 base scoreMedium
Exploitable over the network without any account, but only if a user takes an action, such as opening a file or link. High impact on integrity.
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
Exploitability
Longer bar: easier to attack
Attack vectorNetworkAV:N
Attack complexityLowAC:L
Privileges requiredNonePR:N
User interactionRequiredUI:R
ScopeUnchangedS:U
Impact
Longer bar: more harm
ConfidentialityNoneC:N
IntegrityHighI:H
AvailabilityNoneA:N
- ~0.7% estimated chance of attack in 30 daysModel estimate (): a probability signal, not confirmed exploitation
- Exploited in the wild
- Not confirmed in the
- Not reported
Weaknesses
CWE-358
Affected products ()
- Microsoft Powershell
Show the raw CPE strings (1)
- cpe:2.3:a:microsoft:powershell:*:*:*:*:*:*:*:*
References
1 link from the CVE record, grouped by site; the vendor's advisory comes first.
msrc.microsoft.com1 linkVendor advisory
- CVE-2026-96303 (opens in a new tab)Vendor Advisory