EUVD-2026-43677
GHSA-5w66-g5mr-5v9h
Severity by source
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/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:X
Network-reachable low-complexity overflow needing a low-privilege web-admin session (PR:L); memory-corruption on the device gives high C/I/A with no scope change.
Primary rating from Vendor (VulDB).
CVSS VectorVendor: VulDB
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/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:X
Lifecycle Timeline
5DescriptionCVE.org
A security vulnerability has been detected in Tenda BE12 Pro 16.03.66.23. This issue affects the function fromSafeMacFilter of the file /goform/SafeMacFilter. The manipulation of the argument page leads to stack-based buffer overflow. It is possible to initiate the attack remotely. The exploit has been disclosed publicly and may be used.
AnalysisAI
Stack-based buffer overflow in the Tenda BE12 Pro Wi-Fi router (firmware 16.03.66.23) lets remote attackers corrupt memory by manipulating the 'page' argument of the fromSafeMacFilter handler at /goform/SafeMacFilter. Publicly available exploit code exists, though there is no public exploit identified as being used in active campaigns and it is not listed in CISA KEV. …
Unlock full vulnerability intelligence
- Risk assessment & exploitation conditions
- Attack chain visualization
- Remediation with exact patch versions
- Threat intelligence from 22 sources
- Personal watchlist & email alerts
Free forever · No credit card required
Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires reaching the router's HTTP management interface and invoking the fromSafeMacFilter handler at /goform/SafeMacFilter with a manipulated 'page' argument; the CVSS vector's PR:L means a low-privilege authenticated session on the management UI is required, and UI:N means no victim interaction is needed. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The supplied CVSS 4.0 vector (AV:N/AC:L/AT:N/PR:L/UI:N, VC:H/VI:H/VA:H, base 7.4, E:P) indicates a network-reachable, low-complexity attack requiring some level of authentication (PR:L) and no user interaction, with high impact to confidentiality, integrity, and availability of the vulnerable system but no scope change. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An attacker with low-privilege access to the router's web interface (for example an authenticated user on the LAN, or via an internet-exposed management port if WAN management is enabled) sends a crafted HTTP request to /goform/SafeMacFilter with an oversized 'page' parameter. The overlong value overflows a fixed stack buffer in fromSafeMacFilter, overwriting the return address; given low attack complexity and a publicly available POC, this reliably crashes the device and may be developed into remote code execution on the embedded OS. |
| Remediation | No vendor-released patch identified at time of analysis - no fixed firmware version is cited in the source data, so monitor Tenda (https://www.tenda.com.cn/) and the VulDB entry (https://vuldb.com/vuln/378240) for an updated build and apply it once released. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, inventory all Tenda BE12 Pro routers in production and document firmware versions; restrict access to router management interfaces (HTTP/HTTPS) to authorized administrative networks only using firewall rules. …
Sign in for detailed remediation steps and compensating controls.
Threat intelligence, references, and detailed analysis are available after sign-in.
Stack-based buffer overflow in the Tenda BE12 Pro Wi-Fi router (firmware 16.03.66.23) lets an attacker corrupt the stack
Stack-based buffer overflow in the Tenda BE12 Pro router (firmware 16.03.66.23) allows remote attackers to corrupt memor
Stack-based buffer overflow in the Tenda BE12 Pro router (firmware 16.03.66.23) lets attackers corrupt memory by manipul
Stack-based buffer overflow in the Tenda BE12 Pro router firmware 16.03.66.23 lets an authenticated remote attacker corr
Stack-based buffer overflow in the Tenda BE12 Pro (firmware 16.03.66.23) web management interface lets an attacker corru
Same weakness CWE-121 – Stack-based Buffer Overflow
View allSame technique Buffer Overflow
View allShare
External POC / Exploit Code
Leaving vuln.today