EUVD-2026-92383
GHSA-x79h-v8f2-79c8
Severity by source
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/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:X
Stack overflow reachable over the network with low complexity and no interaction (per input vector); PR:N retained to match source rating though endpoint auth is unverified, with full code-execution impact so C/I/A:H.
Primary rating from Vendor (VulDB).
CVSS VectorVendor: VulDB
Lifecycle Timeline
6DescriptionCVE.org
A security vulnerability has been detected in Totolink A3002MU 1.0.0-B20230403.1455. This affects an unknown function of the file /boafrm/formIpQoS of the component QoS Rule Handler. The manipulation of the argument addQos/comment/entry_name leads to stack-based buffer overflow. Remote exploitation of the attack is possible. The exploit has been disclosed publicly and may be used.
AnalysisAI
Stack-based buffer overflow in the TOTOLINK A3002MU router's QoS Rule Handler allows remote attackers to corrupt memory on the device by supplying oversized addQos, comment, or entry_name arguments to /boafrm/formIpQoS, with high confidentiality, integrity, and availability impact. Only firmware 1.0.0-B20230403.1455 is identified as affected, and publicly available exploit code exists (a published proof-of-concept gist), so anyone who can reach the management interface can attempt it. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires network access to the device's boa-based HTTP management interface and the ability to reach the /boafrm/formIpQoS endpoint (QoS Rule Handler), supplying an oversized addQos, comment, or entry_name argument. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The input CVSS 4.0 vector (AV:N/AC:L/AT:N/PR:N/UI:N) describes a remotely reachable, low-complexity, unauthenticated flaw with high confidentiality, integrity, and availability impact on both the vulnerable and subsequent systems, driving the 9.3 score. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | No vendor-released patch or fixed firmware version is identified in the available data at time of analysis, so operators should first check https://www.totolink.net/ for a newer A3002MU firmware than 1.0.0-B20230403.1455 and, if a security update is published, apply it (referencing the VulDB advisory at https://vuldb.com/vuln/413466 for status). … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, identify all TOTOLINK A3002MU devices running firmware 1.0.0-B20230403.1455 and immediately disable remote management (WAN access to the web interface) and restrict administrative access to trusted internal networks only. …
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Same weakness CWE-121 – Stack-based Buffer Overflow
View allSame technique Buffer Overflow
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External POC / Exploit Code
Leaving vuln.today