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CVE-2026-5851

CRITICAL Exploitation: PoC
9.8
CVSS 3.1
Description
A security flaw has been discovered in Totolink A7100RU 7.4cu.2313_b20191024. This impacts the function setUPnPCfg of the file /cgi-bin/cstecgi.cgi of the component CGI Handler. The manipulation of the argument enable results in os command injection. The attack can be executed remotely. The exploit has been released to the public and may be used for attacks.

Metadata

CVE ID
CVE-2026-5851
State
PUBLISHED
Assigner
VulDB
Reserved
2026-04-08 19:19 UTC
Published
2026-04-09 06:00 UTC
Last updated
2026-04-09 12:13 UTC
Primary CWE
CWE-78
OS Command Injection
Vendor / Product
Totolink / A7100RU
Sources
cve.org  ·  NVD

Severity & Metrics

9.8 CRITICAL CVSS 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R
SSVC — CISA Coordinator
Exploitation
PoC
Automatable
yes
Tech. Impact
total
Affected products (1)
VendorProductPlatformVersions
Totolink A7100RU — 7.4cu.2313_b20191024
Weakness (CWE)
CWESourceDescription
CWE-77 cna Command Injection
CWE-78 cna OS Command Injection
CVSS scores (4)
ScoreSeverityVersionSourceVector
10.0 N/D 2.0 cna AV:N/AC:L/Au:N/C:C/I:C/A:C/E:POC/RL:ND/RC:UR
9.8 CRITICAL 3.1 cna CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R
9.8 CRITICAL 3.0 cna CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R
9.3 CRITICAL 4.0 cna CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P
References (5)
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