CVE-2021-3738

Exploitation

Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.

SSVC decision

Not assessed by CISA

EPSS probability

1.92% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 78.1% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

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

NVD analysis status

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

Red Hat severity

Moderate. Red Hat's rating for its own products, not a CVSS rating.

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

2022-03-02 00:00Z4 YR AGO

Last updated

2024-08-03 17:01Z2 YR AGO

Reserved

2021-08-26

Assigning CNA

redhat

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

• CWE-416Use After FreeVariant

Data version

5.1

Document digest

f1da8e78f7fac3f3a17fd38f4f46d9b01de57ab4b992fa77a16ce8e1e079c6c5

• www.samba.orghttps://www.samba.org/samba/security/CVE-2021-3738.html
• bugzilla.samba.orghttps://bugzilla.samba.org/show_bug.cgi?id=14468
• bugzilla.redhat.comhttps://bugzilla.redhat.com/show_bug.cgi?id=2021726
• security.gentoo.orgGLSA-202309-06https://security.gentoo.org/glsa/202309-06vendor-advisory