CVE-2026-7546Totolink NR1800X lighttpd find_host_ip stack-based overflow
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No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- 9.8 CRITICAL (v3.1, CNA)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
- Weakness (CWE)
- CWE-121, CWE-119
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- VulDB
- NVD analysis
- Deferred
- Record last updated
- May 1, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Totolink NR1800X totolink:nr1800x_firmware | 9.1.0u.6279_B20210910 | CNA record |
References
- https://vuldb.com/vuln/360357vdb-entry, technical-description
- https://vuldb.com/vuln/360357/ctisignature, permissions-required
- https://vuldb.com/submit/804404third-party-advisory
- https://github.com/newym/cve/blob/main/totolinknr1800x.mdexploit
- https://www.totolink.net/product
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.