CVE-2026-4497

Totolink WA300 cstecgi.cgi recvUpgradeNewFw os command injection

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.

Affected

Totolink · WA300

CVSS v4.0 VULDB

5.5 MEDIUMCVSS: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/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

CVSS v3.1 NVD

9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS v3.1 VULDB

7.3 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

CVSS v2.0 VULDB

7.5 HIGHAV:N/AC:L/Au:N/C:P/I:P/A:P

EPSS

2.99% chance of exploitation in the next 30 days, 87th percentile

Published

2026-03-20

Proof-of-concept exploits (1)

• user-attachments/files/25790616/Unauthenticated.Remote.Code.Execution.in.TOTOLINK.WA300.v…

Security advisories

• https://vuldb.com/?id.352046
• https://vuldb.com/?submit.773875
• https://www.totolink.net
• hellonestor/killallbug/issues/1

References

• CVE Record
• NVD entry