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Fencer Vulns
high 8.8

CVE-2025-6138 json

TOTOLINK T10 HTTP POST Request cstecgi.cgi setWizardCfg buffer overflow

published 2025-06-16 16 mo ago modified 2026-06-17 4 mo ago also EUVD-2025-18434

cvss
8.8
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
1.0%
EPSS 1.0% chance of exploitation in 30 days, percentile 62%
public exploits
0
none known

Summary

A vulnerability classified as critical was found in TOTOLINK T10 4.1.8cu.5207. Affected by this vulnerability is the function setWizardCfg of the file /cgi-bin/cstecgi.cgi of the component HTTP POST Request Handler. The manipulation of the argument ssid5g leads to buffer overflow. The attack can be launched remotely. The exploit has been disclosed to the public and may be used.

CISA SSVC

Exploitation
Proof of concept is public
Automatable
no
Technical impact
total
Assessed
16 mo ago

Exploit prediction

0.98% chance of exploitation in the next 30 days, higher than 62% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • candle-throne-f75.notion.site https://candle-throne-f75.notion.site/TOTOLINK-T10-setWizardCfg-20ddf0aa1185808892f1dbbf63e6a153?pvs=73 referenced PoC, tagged "exploit" by a source, unverified
  • candle-throne-f75.notion.site https://candle-throne-f75.notion.site/TOTOLINK-T10-setWizardCfg-20ddf0aa1185808892f1dbbf63e6a153 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CNA 4.0 8.7 CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P
CNA 3.1 8.8 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R
CNA 3.0 8.8 CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R
CNA 2.0 9.0 AV:N/AC:L/Au:S/C:C/I:C/A:C/E:POC/RL:ND/RC:UR
CNA 4.0 7.4 CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/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
CNA 3.1 8.8 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CNA 2.0 9.0 AV:N/AC:L/Au:S/C:C/I:C/A:C

Affected products

  • TOTOLINK T10

Classification

Weakness
  • CWE-120 Buffer Copy without Checking Size of Input
  • CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.