CVE-2023-32251

LOW
INFO Priority: 0.02 BB Relevance: 57/100
Published: 2025-07-31 Modified: 2026-11-09 First seen: 2026-11-09 Status: active

Attack Surface

Network No Auth No Interaction

CVSS Vector Breakdown

AV: Network
AC: High
PR: None
UI: None
S: Unchanged
C: Low
I: None
A: None

Description

A vulnerability has been identified in the Linux kernel's ksmbd component (kernel SMB/CIFS server). A security control designed to prevent dictionary attacks, which introduces a 5-second delay during session setup, can be bypassed through the use of asynchronous requests. This bypass negates the intended anti-brute-force protection, potentially allowing attackers to conduct dictionary attacks more efficiently against user credentials or other authentication mechanisms.

Affected Software (5)

VendorProductVersion
— — 0 < 5.15.145
— — 6.0.0 < 6.0.*
— — 6.1.0 < 6.1.29
— — 6.2.0 < 6.2.16
— — 6.3.0 < 6.3.2

Bug Bounty Relevance

57 / 100
✓ Network accessible
✓ No authentication
✓ No user interaction

CVSS Score

3.7 / 10.0 v3.1
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N

EPSS — Exploitation Probability

0.49%
Raw Score 0.004940
Percentile 43.0%
Date 2026-11-13

EPSS Trend

2026-11-13
0.00494
2026-11-12
0.00494
2026-11-10
0.00494
2026-11-09
0.00494
2026-11-08
0.00494

Intelligence Sources

mitre ref →
nvd ref →