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Description

A vulnerability was determined in Totolink WA300 5.2cu.7112_B20190227. Affected by this issue is the function recvUpgradeNewFw of the file /cgi-bin/cstecgi.cgi. This manipulation causes os command injection. Remote exploitation of the attack is possible. The exploit has been publicly disclosed and may be utilized.

PUBLISHED Reserved 2026-03-20 | Published 2026-03-20 | Updated 2026-03-20 | Assigner VulDB




MEDIUM: 6.9CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
HIGH: 7.3CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R
HIGH: 7.3CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R
7.5AV:N/AC:L/Au:N/C:P/I:P/A:P/E:POC/RL:ND/RC:UR

Problem types

OS Command Injection

Command Injection

Product status

5.2cu.7112_B20190227
affected

Timeline

2026-03-20:Advisory disclosed
2026-03-20:VulDB entry created
2026-03-20:VulDB entry last update

Credits

junqi (VulDB User) reporter

References

vuldb.com/?id.352046 (VDB-352046 | Totolink WA300 cstecgi.cgi recvUpgradeNewFw os command injection) vdb-entry technical-description

vuldb.com/?ctiid.352046 (VDB-352046 | CTI Indicators (IOB, IOC, TTP, IOA)) signature permissions-required

vuldb.com/?submit.773875 (Submit #773875 | Totolink WA300 V5.2cu.7112_B20190227 OS Command Injection) third-party-advisory

github.com/hellonestor/killallbug/issues/1 issue-tracking

github.com/....via.Command.Injection.in.recvUpgradeNewFw.zip exploit patch

www.totolink.net/ product

cve.org (CVE-2026-4497)

nvd.nist.gov (CVE-2026-4497)

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