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 5.3 (Medium).
Operationally, exploitation aligns with the MITRE ATT&CK technique Default Accounts (T1078.001); ranked at the 45.7th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.
The strongest mitigations our analysis identified are NIST 800-53 CM-6 (Configuration Settings) and IA-5 (Authenticator Management).
Deeper analysis
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.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2026-7660
Vulnerability details
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.
- CWE(s)
Related Threats
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.
CVEs Like This One
Affected Assets
Mitigating Controls
Mitigating Controls (NIST 800-53 r5) AI
Directly requires establishing and enforcing secure configuration settings that override the insecure default initialization of the Telnet/SSH resource.
Mandates management of authenticators to eliminate weak or default credentials that enable the local-network exploitation described.
Enforces boundary controls that can restrict or isolate Telnet/SSH exposure on the local network where the attack originates.