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Description

A weakness has been identified in LB-LINK BL-WR9000 2.4.9. The affected element is the function sub_44E8D0 of the file /goform/get_virtual_cfg. Executing a manipulation can lead to stack-based buffer overflow. The attack may be performed from remote. The exploit has been made available to the public and could be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.

PUBLISHED Reserved 2026-03-15 | Published 2026-03-16 | Updated 2026-03-16 | Assigner VulDB




HIGH: 8.7CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P
HIGH: 8.8CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R
HIGH: 8.8CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R
9.0AV:N/AC:L/Au:S/C:C/I:C/A:C/E:POC/RL:ND/RC:UR

Problem types

Stack-based Buffer Overflow

Memory Corruption

Product status

2.4.9
affected

Timeline

2026-03-15:Advisory disclosed
2026-03-15:VulDB entry created
2026-03-15:VulDB entry last update

Credits

jfkk (VulDB User) reporter

VulDB coordinator

References

vuldb.com/?id.351149 (VDB-351149 | LB-LINK BL-WR9000 get_virtual_cfg sub_44E8D0 stack-based overflow) vdb-entry technical-description

vuldb.com/?ctiid.351149 (VDB-351149 | CTI Indicators (IOB, IOC, IOA)) signature permissions-required

vuldb.com/?submit.771207 (Submit #771207 | LB-LINK BL-WR9000 V2.4.9 over) third-party-advisory

github.com/...LINK/LB-LINK_VirtualRules stack overflow_EN.md exploit

cve.org (CVE-2026-4226)

nvd.nist.gov (CVE-2026-4226)

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