Vulnerability Report

CVE-2021-4091

Title: Port389 389-Ds-Base

Other

Proof Of Concept

No public PoC currently indexed for CVE-2021-4091.

CWE Category CWE-415

Published Date Feb 18, 2022

Modified Date Nov 03, 2025

Exploit Status Not Found

Score 7.5 CVSS v3.1

Exploit Probability (EPSS)

0.34%

Vulnerability Summary

CVE-2021-4091: A double-free was found in the way 389-ds-base handles virtual attributes context in persistent searches. An attacker could send a series of search requests, forcing the server to behave unexpectedly, and crash.

Impacted Vendors

port389 1

Reference Links

https://bugzilla.redhat.com/show_bug.cgi?id=2030307 https://lists.debian.org/debian-lts-announce/2023/04/msg00026.html https://bugzilla.redhat.com/show_bug.cgi?id=2030307 https://lists.debian.org/debian-lts-announce/2023/04/msg00026.html https://lists.debian.org/debian-lts-announce/2025/01/msg00015.html

CVSS v3.1

Source Entity [email protected]

Severity HIGH

7.5

Attack Vector

NETWORK

Complexity

LOW

Privileges

N/A

Interaction

NONE

Confidentiality

N/A

Integrity

N/A

Availability

N/A

Scope

UNCHANGED

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

CVSS v2.0

Source Entity [email protected]

Severity MEDIUM

5.0

Access Vector

N/A

Authentication

N/A

RAW VECTOR AV:N/AC:L/Au:N/C:N/I:N/A:P

Associated Attack Patterns (CAPEC)

Total: Patterns

CVE-2021-4091 Exploits & PoCs (Proof Of Concept)

No public PoCs found in our database for this CVE.

November 03, 2025 MODIFIED

Vulnerability data or affected products updated.

February 18, 2022 PUBLISHED

Vulnerability first announced in NVD.

Attack Vector Matrix

Access Vector NETWORK

Complexity LOW

Privileges N/A

Interaction NONE

CVSS Vector String


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

Affected Stack

No specific products linked.