CVE-2026-2617
Published: 17 February 2026
Summary
CVE-2026-2617 is a medium-severity Initialization of a Resource with an Insecure Default (CWE-1188) vulnerability in Beetel 777Vr1 Firmware. Its CVSS base score is 6.3 (Medium).
Operationally, exploitation aligns with the MITRE ATT&CK technique Default Accounts (T1078.001); ranked at the 19.0th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.
Threat & Defense at a Glance
Threat & Defense Details
Likely Mitigating ControlsAI
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.
Requires documented secure initialization practices and avoidance of insecure defaults in configuration baselines.
Reviewing and updating baseline when components are installed or upgraded prevents initialization with insecure defaults.
Requiring explicit configuration to minimal functionality overrides insecure defaults that would otherwise enable excess capabilities.
Tailoring replaces or augments insecure default initializations with system-specific values and compensating controls before deployment.
Central configuration overrides or replaces insecure default initializations that would otherwise be left unchanged on each system.
SCRM practices during acquisition and configuration management address insecure default initializations shipped by vendors.
Scans detect resources initialized with insecure defaults that create exploitable conditions.
Instruction on secure initialization of security controls prevents leaving resources with insecure defaults after installation.
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
Insecure default initialization (CWE-1188) in Telnet/SSH services on adjacent network allows unauthenticated access, directly enabling default account usage and external/remote service exploitation with public PoC available.
NVD Description
A vulnerability was found in Beetel 777VR1 up to 01.00.09. This affects an unknown function of the component Telnet Service/SSH Service. The manipulation results in insecure default initialization of resource. The attack can only be performed from the local network.…
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The exploit has been made public and could be used. The vendor was contacted early about this disclosure but did not respond in any way.
Deeper analysisAI
CVE-2026-2617 is a vulnerability discovered in Beetel 777VR1 devices up to version 01.00.09, affecting an unknown function within the Telnet Service/SSH Service component. The issue stems from insecure default initialization of a resource, classified under CWE-1188, and carries a CVSS v3.1 base score of 6.3 (AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L). It was published on 2026-02-17.
Exploitation requires an attacker to be on the local network, with no privileges or user interaction needed. Successful manipulation can result in low impacts to confidentiality, integrity, and availability. A public exploit is available and could be used, as detailed in referenced proof-of-concept steps.
Advisories from VulDB and a GitHub gist indicate the vendor was contacted early about the disclosure but provided no response, with no patches or official mitigations mentioned. Security practitioners should isolate affected devices from local networks where possible and monitor for exploit attempts using the public references.
Details
- CWE(s)