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CVE Vulnerability Details :
CVE-2026-2566
PUBLISHED
More InfoOfficial Page
Assigner-VulDB
Assigner Org ID-1af790b2-7ee1-4545-860a-a788eba489b5
View Known Exploited Vulnerability (KEV) details
Published At-16 Feb, 2026 | 17:02
Updated At-16 Feb, 2026 | 17:02
Rejected At-
▼CVE Numbering Authority (CNA)
Wavlink WL-NU516U1 adm.cgi sub_406194 stack-based overflow

A security vulnerability has been detected in Wavlink WL-NU516U1 up to 130/260. This affects the function sub_406194 of the file /cgi-bin/adm.cgi. Such manipulation of the argument firmware_url leads to stack-based buffer overflow. The attack can be launched remotely. The exploit has been disclosed publicly and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

Affected Products
Vendor
WAVLINK Technology Ltd.Wavlink
Product
WL-NU516U1
Versions
Affected
  • 130
  • 260
Problem Types
TypeCWE IDDescription
CWECWE-121Stack-based Buffer Overflow
CWECWE-119Memory Corruption
Type: CWE
CWE ID: CWE-121
Description: Stack-based Buffer Overflow
Type: CWE
CWE ID: CWE-119
Description: Memory Corruption
Metrics
VersionBase scoreBase severityVector
4.08.6HIGH
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P
3.17.2HIGH
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R
3.07.2HIGH
CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R
2.08.3N/A
AV:N/AC:L/Au:M/C:C/I:C/A:C/E:POC/RL:ND/RC:UR
Version: 4.0
Base score: 8.6
Base severity: HIGH
Vector:
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P
Version: 3.1
Base score: 7.2
Base severity: HIGH
Vector:
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R
Version: 3.0
Base score: 7.2
Base severity: HIGH
Vector:
CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R
Version: 2.0
Base score: 8.3
Base severity: N/A
Vector:
AV:N/AC:L/Au:M/C:C/I:C/A:C/E:POC/RL:ND/RC:UR
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
reporter
haimianbaobao (VulDB User)
Timeline
EventDate
Advisory disclosed2026-02-15 00:00:00
VulDB entry created2026-02-15 01:00:00
VulDB entry last update2026-02-15 20:45:16
Event: Advisory disclosed
Date: 2026-02-15 00:00:00
Event: VulDB entry created
Date: 2026-02-15 01:00:00
Event: VulDB entry last update
Date: 2026-02-15 20:45:16
Replaced By
Rejected Reason
References
HyperlinkResource
https://vuldb.com/?id.346173
vdb-entry
technical-description
https://vuldb.com/?ctiid.346173
signature
permissions-required
https://vuldb.com/?submit.751908
third-party-advisory
https://github.com/Wlz1112/Wavlink-NU516U1-V251208-/blob/main/firmware_url.md
exploit
Hyperlink: https://vuldb.com/?id.346173
Resource:
vdb-entry
technical-description
Hyperlink: https://vuldb.com/?ctiid.346173
Resource:
signature
permissions-required
Hyperlink: https://vuldb.com/?submit.751908
Resource:
third-party-advisory
Hyperlink: https://github.com/Wlz1112/Wavlink-NU516U1-V251208-/blob/main/firmware_url.md
Resource:
exploit
Details not found