CVE-2026-9531

A weakness has been identified in Totolink CA750-PoE 6.2c.510. Impacted is the function setUpgradeUboot of the file /cgi-bin/cstecgi.cgi of the component Setting Handler. This manipulation of the argument FileName causes os command injection. The attack is possible to be carried out remotely. The exploit has been made available to the public and could be used for attacks.

CVSS v4.0

2.1 LOWCVSS:4.0/AV:N/AC:L/AT:N/PR:L/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

6.3 MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

CVSS v2.0

6.5 MEDIUMAV:N/AC:L/Au:S/C:P/I:P/A:P

EPSS

10.81% chance of exploitation in the next 30 days, 96th percentile

Published

2026-05-26

Updated

2026-05-28

Proof-of-concept exploits (1)

• wudipjq/my_vuln/blob/main/totolink4/vuln_54/54.md

References

• CVE Record
• NVD entry

Related

• CVE-2026-9530
• CVE-2026-9532
• CVE-2026-9529
• CVE-2026-9533
• CVE-2026-9528
• CVE-2026-9534