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Description

A vulnerability was identified in DrayTek Vigor 300B up to 1.5.1.6. This affects the function cgiGetFile of the file /cgi-bin/mainfunction.cgi/uploadlangs of the component Web Management Interface. The manipulation of the argument File leads to os command injection. The attack may be initiated remotely. The exploit is publicly available and might be used. The vendor confirms that "300B is EoL, and this is an authenticated vulnerability. We don't plan to fix it." This vulnerability only affects products that are no longer supported by the maintainer.

PUBLISHED Reserved 2026-02-23 | Published 2026-02-23 | Updated 2026-02-23 | Assigner VulDB




MEDIUM: 5.1CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
MEDIUM: 4.7CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R
MEDIUM: 4.7CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R
5.8AV:N/AC:L/Au:M/C:P/I:P/A:P/E:POC/RL:ND/RC:UR

Problem types

OS Command Injection

Command Injection

Product status

1.5.1.0
affected

1.5.1.1
affected

1.5.1.2
affected

1.5.1.3
affected

1.5.1.4
affected

1.5.1.5
affected

1.5.1.6
affected

Timeline

2026-02-23:Advisory disclosed
2026-02-23:VulDB entry created
2026-02-23:VulDB entry last update

Credits

jiefengliang (VulDB User) reporter

References

vuldb.com/?id.347394 (VDB-347394 | DrayTek Vigor 300B Web Management uploadlangs cgiGetFile os command injection) vdb-entry technical-description

vuldb.com/?ctiid.347394 (VDB-347394 | CTI Indicators (IOB, IOC, TTP, IOA)) signature permissions-required

vuldb.com/?submit.757126 (Submit #757126 | DrayTek Vigor 300B v1.5.1.6 OS Command Injection) third-party-advisory

github.com/master-abc/cve/issues/42 exploit issue-tracking

cve.org (CVE-2026-3040)

nvd.nist.gov (CVE-2026-3040)

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