PT-2026-21570 · Draytek · Vigor300B

Jiefengliang · Publicado 2026-02-23 · Atualizado 2026-02-24 · CVE-2026-3040

Positive Technologies (AI Summary)

CVSS v3.1

7.2

Alta

Vetor base

AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions DrayTek Vigor 300B versions up to 1.5.1.6

Description A flaw exists in DrayTek Vigor 300B that allows for operating system command injection. This issue is located within the cgiGetFile function of the /cgi-bin/mainfunction.cgi/uploadlangs file, part of the Web Management Interface component. The File argument can be manipulated to execute arbitrary commands remotely. The vendor has stated that the product is end-of-life and will not be patched. The exploit is publicly available.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Command Injection

OS Command Injection

Enumeração de Fraquezas

CWE-77

CWE-78

Identificadores relacionados

CVE-2026-3040

Produtos afetados

Vigor300B

Referências · 8

• 🔥 https://github.com/master-abc/cve/issues/42 · Exploit
• https://twitter.com/CVEnew/status/2026184677720281130 · Publicação no Twitter
• https://nvd.nist.gov/vuln/detail/CVE-2026-3040 · Nota de Segurança
• https://osv.dev/vulnerability/CVE-2026-3040 · Aviso do Fabricante
• https://t.me/CVEtracker/45533 · Publicação no Telegram
• https://vuldb.com/?id.347394 · Nota
• https://vuldb.com/?ctiid.347394 · Nota
• https://vuldb.com/?submit.757126 · Nota