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The vulnerability of the `setUpgradeFW()` function in the `cgi-bin/cstecgi.cgi` script of the TOTOLINK N300RH router’s microprogramming software allows a perpetrator to execute arbitrary code or cause service failures.
🗓️ 05 May 2026 00:00:00Reported by FSTEC of Russia — Information Security Threat DatabaseType 
bdu_fstec🔗 bdu.fstec.ru👁 2 Views
| Reporter | Title | Published | Views | Family All 10 |
|---|---|---|---|---|
 | CVE-2026-7748 | 4 May 202608:30 | – | attackerkb |
 | CVE-2026-7748 | 4 May 202610:28 | – | circl |
 | TOTOLINK N300RH 缓冲区错误漏洞 | 4 May 202600:00 | – | cnnvd |
 | CVE-2026-7748 | 4 May 202608:30 | – | cve |
 | CVE-2026-7748 Totolink N300RH POST Request cstecgi.cgi setUpgradeFW buffer overflow | 4 May 202608:30 | – | cvelist |
 | EUVD-2026-26939 | 4 May 202608:30 | – | euvd |
 | CVE-2026-7748 | 4 May 202610:16 | – | nvd |
 | PT-2026-36793 | 17 Apr 202600:00 | – | ptsecurity |
 | CVE-2026-7748 | 5 Jun 202619:22 | – | redhatcve |
 | CVE-2026-7748 Totolink N300RH POST Request cstecgi.cgi setUpgradeFW buffer overflow | 4 May 202608:30 | – | vulnrichment |
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05 May 2026 00:00Current
7.7High risk
Vulners AI Score7.7
CVSS 38.8
CVSS 29
EPSS0.00463