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CVE-2026-6158

Totolink N300RH upgrade.so setUpgradeUboot os command injection

CVSS 6.9 MEDIUMEPSS 1.4%CWE-77CWE-78
Vexday Risk Score
33Attention
SSVC decision (CISA)
Attend
PoC available → attend closely
CVSS 6.9EPSS 1.4%KEV nãoPoC públicaNuclei —Metasploit —Patch referenciado
Lifecycle
13 Apr 2026Published on NVD
Recommendation: Plan a near-term fix — a public PoC already exists.
A flaw has been found in Totolink N300RH 6.1c.1353_B20190305. Affected is the function setUpgradeUboot of the file upgrade.so. This manipulation of the argument FileName causes os command injection. The attack is possible to be carried out remotely. The exploit has been published and may be used.
CVSS: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
Affected products
Totolink · N300RH
public PoCs found — 1
cve_referencegithub.com/xyh4ck/iot_poc/tree/main/TOTOLINK/N300RHv4/02_setUpgradeUboot_RCEunverified
⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.

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References
https://github.com/xyh4ck/iot_poc/tree/main/TOTOLINK/N300RHv4/02_setUpgradeUboot_RCEhttps://vuldb.com/submit/796426https://vuldb.com/vuln/357038https://vuldb.com/vuln/357038/ctihttps://www.totolink.net/