CVE-2023-6612
Command Injection in Totolink X5000R Firmware 9.1.0cu.2300_b20230112
Raw vector
CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:LCVSS and EPSS are reproduced from their sources (NVD, FIRST EPSS). Risk Priority is our own derived reading, not an NVD score.
Summary
CVE-2023-6612 is a medium-severity OS Command Injection (CWE-78) vulnerability in Totolink X5000R Firmware. Its CVSS base score is 5.5 (Medium).
Operationally, exploitation aligns with the MITRE ATT&CK technique NTDS (T1003.003); ranked in the top 2% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.
Deeper analysis AI-assisted summary
Synthesised by an AI model from the NVD description and linked references — a reading aid, not an authoritative source.
A vulnerability rated critical exists in the Totolink X5000R firmware version 9.1.0cu.2300_B20230112. Multiple functions within /cgi-bin/cstecgi.cgi, including setDdnsCfg, setDynamicRoute, setFirewallType, setIPSecCfg and numerous other set*Cfg handlers, accept unsanitized input that results in operating system command injection, as indicated by CWE-78. The issue was publicly disclosed with proof-of-concept material but received no vendor response.
An attacker with local network access and valid credentials can invoke the affected CGI endpoints to execute arbitrary commands on the device. Successful exploitation grants limited control over configuration and system behavior, corresponding to the CVSS vector AV:A/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L.
Public references consist of a GitHub repository containing exploit details and VulDB entries that record the disclosure timeline; no patches or mitigation guidance are provided in these sources. The associated EPSS score has remained flat at 0.1381 with no material increase since publication.
OWASP Top 10 for Web (2025)
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2023-58835
Vulnerability Data
A vulnerability was found in Totolink X5000R 9.1.0cu.2300_B20230112. It has been rated as critical. This issue affects the function setDdnsCfg/setDynamicRoute/setFirewallType/setIPSecCfg/setIpPortFilterRules/setLancfg/setLoginPasswordCfg/setMacFilterRules/setMtknatCfg/setNetworkConfig/setPortForwardRules/setRemoteCfg/setSSServer/setScheduleCfg/setSmartQosCfg/setStaticDhcpRules/setStaticRoute/setVpnAccountCfg/setVpnPassCfg/setVpnUser/setWiFiAclAddConfig/setWiFiEasyGuestCfg/setWiFiGuestCfg/setWiFiRepeaterConfig/setWiFiScheduleCfg/setWizardCfg of the file /cgi-bin/cstecgi.cgi. The manipulation leads to os command injection. The exploit has been disclosed to the public and…
more
may be used. The associated identifier of this vulnerability is VDB-247247. NOTE: The vendor was contacted early about this disclosure but did not respond in any way.
- CWE(s)
Related Threats
MITRE ATT&CK Enterprise Techniques
CVEs Like This One
Affected Assets
Mitigating Controls
Control response
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V1.2.5V1.2.8
Likely Mitigating Controls AI
Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.
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's SDLC practices directly require secure coding and input handling that blocks command-injection defects, yet the single broad outcome leaves many specific neutralization vectors and verification gaps unaddressed.
Routine patching/maintenance can remediate known command-injection CVEs in dependencies (partial forward) but does nothing to stop developers from introducing improper neutralization in custom code (none reverse).
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.