What is CVE-2026-6158?

CVE-2026-6158 is a high-severity vulnerability in Totolink N300rh, classified under Command Injection. CVSS score: 7.3/10. Published 2026-04-13.

How severe is CVE-2026-6158?

High severity. CVSS v3 base score is 7.3 out of 10.

RCE in Totolink N300rh

CVE-2026-6158

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…

Vulnerability class: Command Injection (OS Command Injection)

EPSS: 0.012 (78.9th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.3 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L.

Affected products

Totolink N300rh — versions 6.1c.1353_B20190305

Weakness classification (CWE)

References

VDB-357038 | Totolink N300RH upgrade.so setUpgradeUboot os command injection (technical-description, vdb-entry)
VDB-357038 | CTI Indicators (IOB, IOC, TTP, IOA) (signature, permissions-required)
Submit #796426 | TOTOLINK N300RH_V4 V6.1c.1353_B20190305 OS Command Injection (third-party-advisory)
cna@vuldb.com (exploit, patch)
cna@vuldb.com (product)

Frequently asked questions

What is CVE-2026-6158?: CVE-2026-6158 is a high-severity vulnerability in Totolink N300rh, classified under Command Injection. CVSS score: 7.3/10. Published 2026-04-13.
How severe is CVE-2026-6158?: High severity. CVSS v3 base score is 7.3 out of 10.