PT-2026-25636 · Lb Link · Lb-Link Bl-Wr9000

Jfkk + 1 · Published 2026-03-04 · Updated 2026-03-16 · CVE-2026-4226

Positive Technologies (AI Summary)

CVSS v2.0

10

Critical

Base vector

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

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

Description A weakness exists in LB-LINK BL-WR9000 version 2.4.9. The issue is related to the sub 44E8D0 function within the /goform/get virtual cfg file. A manipulation of this function can lead to a stack-based buffer overflow. The attack can be performed remotely. The exploit for this issue is publicly available. 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

Stack Overflow

Memory Corruption

Buffer Overflow

Weakness Enumeration

CWE-121

CWE-787

CWE-119

Related Identifiers

BDU:2026-04242

CVE-2026-4226

Affected Products

Lb-Link Bl-Wr9000

References · 11

• 🔥 https://github.com/glkfc/IoT-Vulnerability/blob/main/LB-LINK/LB-LINK_VirtualRules%20stack%20overflow_EN.md · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2026-4226 · Security Note
• https://bdu.fstec.ru/vul/2026-04242 · Security Note
• https://vuldb.com/?id.351149 · Note
• https://twitter.com/cyberbivash/status/2033467886874841372 · Twitter Post
• https://t.me/CVEtracker/47522 · Telegram Post
• https://twitter.com/TheHackerWire/status/2033559075825607132 · Twitter Post
• https://twitter.com/CveFindCom/status/2033585200668569611 · Twitter Post
• https://vuldb.com/?submit.771207 · Note
• https://vuldb.com/?ctiid.351149 · Note
• https://twitter.com/CVEnew/status/2033583688584487083 · Twitter Post