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CVE-2026-58374

Quick assessment

Affected
w1.fi hostapd
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

hostapd是hostapd团队开源的一款无线接入点管理软件。 Jouni Malinen hostapd 2.12之前版本存在数字错误漏洞，该漏洞源于AP模式多链路操作关联请求处理中缺少边界检查，导致未经身份验证的无线攻击者可发送特制管理帧，触发越界写入导致内存破坏，造成拒绝服务。

CVSS 6.5 · Medium EPSS 0.47% · P38

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 1

VendorProduct Version RangeStatus
w1.fi hostapd < 2.12 affected
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I. Basic Information for CVE-2026-58374

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
In hostapd before 2.12, a missing bounds check in AP-mode Wi-Fi 7 (IEEE 802.11be) Multi-Link Operation (MLO) association request processing allows an unauthenticated attacker within wireless range to send a crafted management frame containing a malformed Multi-Link Element or Per-STA Profile subelement. In hostapd_process_ml_assoc_req() in src/ap/ieee802_11_eht.c, the received link_id field can be parsed as value 15, but the corresponding links[] storage only has valid entries for lower link IDs (0 through 14). This causes an out-of-bounds write / small memory corruption during association processing before the 4-way handshake. The attack does not require network credentials, prior authentication, or user interaction. The confirmed practical impact is denial of service through hostapd process termination. This affects hostapd v2.11 and newer development snapshots before v2.12 when built with CONFIG_IEEE80211BE enabled. The issue is fixed in hostapd v2.12 and the upstream 2026-1 fixes.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
Off-by-one错误
Source: CVE Program / CVE List V5
Vulnerability Title
Jouni Malinen hostapd 数字错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
hostapd是hostapd团队开源的一款无线接入点管理软件。 Jouni Malinen hostapd 2.12之前版本存在数字错误漏洞，该漏洞源于AP模式多链路操作关联请求处理中缺少边界检查，导致未经身份验证的无线攻击者可发送特制管理帧，触发越界写入导致内存破坏，造成拒绝服务。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
w1.fi hostapd 0 ~ 2.12 -

II. Public POCs for CVE-2026-58374

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III. Intelligence Information for CVE-2026-58374

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Patches & Fixes for CVE-2026-58374 (2)

Vendor Advisories for CVE-2026-58374 (1)

Mailing List Discussions for CVE-2026-58374 (1)

IV. Related Vulnerabilities

Same product: hostapd
Same weakness: CWE-193

V. Comments for CVE-2026-58374

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