Cyber Resilience

CVE-2024-31806

Totolink Ex200 Firmware 4.0.3c.7646_b20201211

Published
08 April 2024
Modified
17 June 2026
CVSS Score v3.1 6.5
Click a component to see what it means
Raw vectorCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS Score 0.0039 32th percentile
Risk Priority 50 floored blend · peak EPSS

Summary

CVE-2024-31806 is a medium-severity Special Element Injection (CWE-75) vulnerability in Totolink Ex200 Firmware. Its CVSS base score is 6.5 (Medium).

Operationally, exploitation aligns with the MITRE ATT&CK technique Content Injection (T1659); ranked at the 32th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

The strongest mitigations our analysis identified map to SI-10 (Information Input Validation) — see the control section below for these in your framework.

EU & UK References

Vulnerability Data

TOTOLINK EX200 V4.0.3c.7646_B20201211 was discovered to contain a Denial-of-Service (DoS) vulnerability in the RebootSystem function which can reboot the system without authorization.

CWE(s)
CWE-75

Related Threats

MITRE ATT&CK Enterprise Techniques

T1659 Content Injection Initial Access
Adversaries may gain access and continuously communicate with victims by injecting malicious content into systems through online network traffic.
attack.mitre.org →
T1190 Exploit Public-Facing Application Initial Access
Adversaries may attempt to exploit a weakness in an Internet-facing host or system to initially access a network.
attack.mitre.org →
T1059 Command and Scripting Interpreter Execution
Adversaries may abuse command and script interpreters to execute commands, scripts, or binaries.
attack.mitre.org →
Derived from this CVE’s CWE(s) via the direct CWE→ATT&CK cross-walk.

CVEs Like This One

CVE-2024-31812Same product: Totolink Ex200
CVE-2024-31809Same product: Totolink Ex200
CVE-2024-32326Same product: Totolink Ex200
CVE-2024-31815Same product: Totolink Ex200
CVE-2024-32325Same product: Totolink Ex200
CVE-2024-31811Same product: Totolink Ex200
CVE-2024-53333Same product: Totolink Ex200
CVE-2024-31814Same product: Totolink Ex200
CVE-2024-31808Same product: Totolink Ex200
CVE-2024-31807Same product: Totolink Ex200

Affected Assets

totolink
ex200 firmware
4.0.3c.7646_b20201211

Mitigating Controls

Mitigating Controls (NIST 800-53 r5) AI

SI-10 Information Input Validation good match

Input validation directly stops special-element injection by rejecting or sanitizing untrusted data before it reaches a different control plane.

Mitigating Controls (NIST CSF 2.0) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→CSF cross-walk (authority under review) — links open the control.

PR.PS-06 mostly match
prevents

Secure SDLC practices directly require input sanitization to block special-element injection.

Mitigating Controls (ISO/IEC 27001:2022 Annex A) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→ISO cross-walk (authority under review) — links open the control.

A.8.29 Security testing in development and acceptance mostly match
finds

Security testing catches injection vulnerabilities but does not itself implement the sanitization fix.

A.8.15 Logging partial match
finds

Logging can record injection attempts for detection but does not prevent the weakness.

A.8.25 Secure development life cycle partial match
prevents

Secure development life cycle mandates input validation and sanitization practices that directly prevent special-element injection.

A.8.26 Application security requirements partial match
prevents

Application security requirements explicitly call for controls against injection flaws including special-element handling.

A.8.27 Secure system architecture and engineering principles partial match
prevents

Secure architecture principles reduce injection surfaces but do not prescribe the actual sanitization logic.

A.8.28 Secure coding partial match
prevents

Secure coding standards require rigorous input sanitization, directly eliminating CWE-75.

References