CVE-2023-1638

Exploitation

Public exploit code exists. CISA's assessment records a public proof of concept. That is not a report of exploitation in the wild.

SSVC decision

• ExploitationpocPublic proof-of-concept exploit code exists. Not a report of exploitation in the wild.
• AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
• Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

0.32% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 24.5% of scored records. A rank, not a probability.

NVD base score

5.5 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

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

NVD analysis status

Modified. NVD last modified this record on 2026-06-17.

Red Hat severity

No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2023-03-26 20:31Z3 YR AGO

Last updated

2025-02-19 20:15Z1 YR AGO

Reserved

2023-03-26

Assigning CNA

VulDB

Record state

PUBLISHED

Severity

Medium (CVSS 5.5)

CNA CVSS vector

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

Weaknesses

• CWE-404Improper Resource Shutdown or ReleaseClass

Data version

5.1

Document digest

03ac77e3a74e8c341ba753b9f41e05baee890c66d198fb4dfe74f3885cfacfa2

• vuldb.comhttps://vuldb.com/?id.224018vdb-entrytechnical-description
• vuldb.comhttps://vuldb.com/?ctiid.224018signaturepermissions-required
• github.comhttps://github.com/zeze-zeze/WindowsKernelVuln/tree/master/CVE-2023-1638related
• drive.google.comhttps://drive.google.com/file/d/1_jYlCkQMNaUwGV5QJtyz4zhdTqaGCv6Z/viewexploit