CVE-2026-6158Exploit

MEDIUMCVSS 5.5 · MEDIUM

Exploit discussion active in current signal (1 latest mentions)

Immediate actions

Patch affected systems immediately
Hunt for exploitation attempts and persistence artifacts
Increase monitoring for publicly documented tradecraft

Recommended action window: High priority (within 72h)

NVD description

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.

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4.0/ 10 priority

Sources & remediation

Other references

Weakness type (CWE)

CWE-77CWE-78

Priority

MEDIUM

Exploitation

NONE

PoC

YES

Patch

AVAILABLE

Momentum

NONE

Threat summary

Public PoC and exploit tooling are both present
Patch or workaround signal is available
1 mentions across 1 observed day

What's happening

Exploit tool or code specified in 1 signal
PoC mentioned or linked in 1 signal
Patch or workaround mentioned in 1 signal
Technical details provided in 1 signal
1 total mentions across 1 day

Deep dive

Activity timeline1 mentions / 1d

Signal classification1 categories

Exploit

1100.0%

Full discourse1 post

DFIR Lab@DFIR_Lab164d
Exploit
🚨 HIGH SEVERITY: CVE-2026-6158 (CVSS 7.3) Totolink N300RH router vulnerable to OS command injection via setUpgradeUboot function. Remotely exploitable, exploit code public. Patch immediately or isolate affected devices. #CVE #Vulnerability #PatchNow https://t.co/JYO23IeSf6
Post summary
The post alerts that Totolink N300RH routers are vulnerable to OS command injection (CVE-2026-6158), with public exploit code available, and urges users to patch or isolate affected devices immediately.
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9 followersView on X

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