CVE-2026-7546
Totolink NR1800X lighttpd find_host_ip stack-based overflow
- State
- Published
- Severity
- 9.3 Critical
- Published
- May 1, 2026
- Updated
- May 1, 2026
- Reserved
- Apr 30, 2026
Description
A security vulnerability has been detected in Totolink NR1800X 9.1.0u.6279_B20210910. The impacted element is the function find_host_ip of the component lighttpd. Such manipulation of the argument Host leads to stack-based buffer overflow. The attack can be executed remotely. The exploit has been disclosed publicly and may be used.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 9.3 Critical | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P | VulDB |
| 3.1 | 9.8 Critical | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:W/RC:R | VulDB |
| 3.0 | 9.8 Critical | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:W/RC:R | VulDB |
| 2.0 | 10.0 High | AV:N/AC:L/Au:N/C:C/I:C/A:C/E:POC/RL:W/RC:UR | VulDB |
Weaknesses
Affected Products
| Product | Versions |
|---|---|
NR1800XTotolink |
|
References
- VDB-360357 | Totolink NR1800X lighttpd find_host_ip stack-based overflowvdb-entrytechnical-description
- VDB-360357 | CTI Indicators (IOB, IOC, IOA)signaturepermissions-required
- Submit #804404 | Totolink C834FR-1C NR1800X 内存损坏third-party-advisory
- https://github.com/newym/cve/blob/main/totolinknr1800x.mdexploit
- https://www.totolink.net/product
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