EUVD-2026-36753
GHSA-wwh3-3qmr-qqw6
Vulnerability Assessment
| Weakness |
CWE
MITRE ATT&CK
2 techniques across 1 tactic: Execution The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up. |
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Alert meAnalysisAIv1 – Jul 23, 2026
OS command injection in the Tenda 5G03 5G CPE router (firmware V05.03.02.04) lets remote attackers inject arbitrary system commands through the ratMode parameter of the action_set_rat_mode function. Because the CVSS vector rates the flaw as network-reachable with no authentication or user interaction (AV:N/AC:L/PR:N/UI:N), an attacker who can reach the device's web interface gains full command execution on the underlying firmware. A public technical write-up/PoC exists on GitHub, though EPSS remains modest at 0.45% and there is no evidence of active exploitation.
Affected VersionsENISA
Affects your stack
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Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Primary rating from Vendor (mitre) · only source for this CVE.
CVSS VectorVendor: mitre
Lifecycle Timeline
2DescriptionCVE.org
Tenda 5G03 V05.03.02.04 (Version 1.0) is vulnerable to Command injection in the function action_set_rat_mode via the ratMode parameter.
Executive ViewAI
The Tenda 5G03 5G CPE router (firmware V05.03.02.04) contains a critical remote command injection vulnerability that allows unauthenticated attackers to gain full control of the device through its web interface. Organizations deploying this CPE model face immediate risk of device compromise and potential network-wide lateral movement.
Within 24 hours: Audit network inventory to identify all Tenda 5G03 devices with firmware V05.03.02.04 and document their network placement and management dependencies. Immediately restrict network access to the CPE's web management interface using firewall rules and network segmentation. Within 7 days: Disable the web management interface entirely if feasible, or transition to out-of-band management methods; deploy network-level intrusion detection signatures monitoring for ratMode parameter exploitation attempts to this device class. Within 30 days: Evaluate firmware alternatives from Tenda or consider replacement with CPE models from vendors with active security support, as no patch is available from the vendor.
Without a vendor patch, implement network segmentation to isolate affected CPE devices from sensitive network segments; disable or restrict remote management access to these devices; require only local management connections; deploy network monitoring rules to detect exploitation attempts; maintain inventory of affected devices for hardware replacement planning.
Threat Intelligence Overview
NVD
CVE.org
EPSS
Vulnrichment
How this decision was reached
The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.
What every action level means
SSVC AssessmentENISA
Priority Score
Attack Technique
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