PT-2026-25637 · Lb Link · Lb-Link Bl-Wr9000

Jfkk + 1 · Published 2026-03-04 · Updated 2026-04-13 · CVE-2026-4227

Positive Technologies (AI Summary)

CVSS v2.0

9.0

High

Base vector

AV:N/AC:L/Au:S/C:C/I:C/A:C

Name of the Vulnerable Software and Affected Versions LB-LINK BL-WR9000 version 2.4.9

Description A security issue has been identified in LB-LINK BL-WR9000 version 2.4.9. The issue resides in the sub 44D844 function within the /goform/get hidessid cfg file. Manipulation of this function leads to a buffer overflow, and the attack can be initiated remotely. The exploit for this issue has been publicly disclosed. The vendor was contacted regarding this disclosure but did not respond.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Buffer Overflow

Out of bounds Read

Weakness Enumeration

CWE-120

CWE-119

CWE-125

Related Identifiers

BDU:2026-04239

CVE-2026-4227

Affected Products

Lb-Link Bl-Wr9000

References · 12

• 🔥 https://github.com/glkfc/IoT-Vulnerability/blob/main/LB-LINK/LB-LINK_HideSSID%20stack%20overflow_EN.md · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2026-4227 · Security Note
• https://bdu.fstec.ru/vul/2026-04239 · Security Note
• https://twitter.com/DavidMarquet19/status/2043585125586247757 · Twitter Post
• https://twitter.com/vuldb/status/2033513904773742908 · Twitter Post
• https://vuldb.com/?id.351150 · Note
• https://twitter.com/CVEnew/status/2033583687737217078 · Twitter Post
• https://t.me/CVEtracker/47523 · Telegram Post
• https://twitter.com/TheHackerWire/status/2033559124274004386 · Twitter Post
• https://vuldb.com/?ctiid.351150 · Note
• https://twitter.com/CveFindCom/status/2033585240837406746 · Twitter Post
• https://vuldb.com/?submit.771209 · Note