CVE-2026-6158: totolink n300rh_firmware Command Injection
CVSS: 7.5v2.0HighDeferred
Published 13-04-2026Last modified 16-04-2026
Vulnerability summary
CVE-2026-6158 is a high (CVSS 7.5) Command Injection vulnerability in totolink n300rh_firmware. EPSS estimates a 2.06% chance of exploitation in the next 30 days, higher than 81.1% of scored vulnerabilities. 1 public exploit is recorded.
CVSS score
7.5/10
010
High · v2.0 (CVE.org)EPSS score
2.06%
0%100%
Low · +0.51 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1github
Timeline
- 13-04-2026PublishedVulnerability first disclosed.
- 16-04-2026Last modifiedVulnerability information updated.
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.
CVSS metrics
7 scores · 2 sources · 4 versionsMedium 6.9Preferred score · CVE.org (CNA)
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:PSources2 sources · 5.5–6.9
- NVDNIST5.5MediumCVSS: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/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:XDiffers
High 7.3Preferred score · CVE.org (CNA)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:RSourcesAll 2 agree
- NVDNIST7.3HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
High 7.3Preferred score · CVE.org (CNA)
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:RSourcesSingle source
High 7.5Preferred score · CVE.org (CNA)
AV:N/AC:L/Au:N/C:P/I:P/A:P/E:POC/RL:ND/RC:URSourcesAll 2 agree
- NVDNIST7.5HighAV:N/AC:L/Au:N/C:P/I:P/A:P
EPSS trend
Probability
2.06%
Chance of exploitation in the next 30 days
Percentile
81%
Versus all other CVEs
30-day change
+0.51 pp
From 1.55% on 21-09-2026
21-09-202621-10-2026
EPSS score2.06%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
1 foundIot Poc
Maturity: poc
Weaknesses
CWE · root cause- CWE-77Improper Neutralization of Special Elements used in a Command ('Command Injection')The product constructs all or part of a command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended command when it is sent to a downstream component.
- CWE-78Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')The product constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component.
Affected systems
Totolink1 product
- n300rh_firmware6.1c.1353_B20190305
1 vendor · 1 product
References
5 links- vuldb.com/submit/796426Third Party Advisory
- www.totolink.netProduct