CVE-2026-58374Disclosure(w1.fi / hostapd)

LOWCVSS 7.1 · HIGH

Signal is active with 1 mentions in latest observed window

Immediate actions

Track advisory updates for patch or workaround availability

Recommended action window: Monitor and triage in normal cycle

NVD 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.

w1.fi CVEs Back to dashboard

0.0/ 10 priority

Sources & remediation

Patch / fix

Vendor / third-party advisories

https://w1.fi/security/2026-1/missing-ml-parsing-validation.txt

Other references

https://w1.fi/security/2026-1/

Weakness type (CWE)

CWE-193

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

AVAILABLE

Momentum

STABLE

Are you affected?

If you run products in this scope, you should treat this CVE as relevant to your environment.

hostapd

Threat summary

2 mentions across 2 observed days
Momentum state: stable

What's happening

Technical details provided in 1 signal
Disclosure: 1 classified signal
General: 1 classified signal
Peaked 1d ago at 1 mentions (2026-07-05); latest day: 1
2 total mentions across 2 days

Affected systems

Vendors

w1.fi

Products

hostapd

Deep dive

Activity timeline2 mentions / 2d

Signal classification2 categories

Disclosure

150.0%

General

150.0%

Referenced assets2 URLs

By indicator

Classification over time

Date	Total	Labels

2026-07-05	1	Disclosure1
2026-08-03	1	General1

Full discourse2 posts

mRr3b00t@UK_Daniel_Card62d
General
going back to my theory: is ur router vulnerable to CVE-2026-58374? how would you know? take for example this @GLiNetWiFi router: https://dl.gl-inet.com/router/be10000/stable the vulnerability was published: 06/30/2026 the last firmware update was: '2024-12-27' https://t.co/uy9A7iy2g2
Post summary
The post poses a question about CVE‑2026‑58374 for a specific router model, citing a firmware link and dates, but lacks any evidence of exploitation, PoC, patch, or technical detail.
4301044.0K
125.6K followersView on X
Open Source Security mailing list@oss_security91d
Disclosure
CVE-2026-58374: hostapd: OOB write in Wi-Fi 7 MLD association parsing (pre-auth DoS) https://www.openwall.com/lists/oss-security/2026/07/01/2
Post summary
The text announces a newly disclosed hostapd vulnerability (CVE‑2026‑58374) involving an out‑of‑bounds write during Wi‑Fi 7 MLD association parsing that can cause a pre‑authentication denial‑of‑service.
020811.0K
4.7K followersView on X

CPE platform detail1 entries

Part:

Vendor:

Product:

Version:

Target SW:

Target HW:

1 of 1 entries

Part	Vendor	Product	Version	Target SW	Target HW
App	w1.fi	hostapd	-	-	-

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