Security readout for executives and security teams
Plain-English summary
CVE-2026-1407 is a low-severity information disclosure issue in Beetel 777VR1 routers. The reported exposure occurs through the device UART interface, meaning an attacker likely needs physical access to the router. Public reporting says sensitive information may appear in boot logs. This is not an internet-scale emergency, but it matters for devices in untrusted physical locations.
Executive priority
Prioritize as low urgency unless these routers are deployed in physically exposed locations or protect sensitive networks. The main business risk is local credential disclosure leading to follow-on access. Focus on inventory, physical access control, and vendor guidance.
Technical view
The flaw affects Beetel 777VR1 firmware versions 01.00.09 and 01.00.09_55. Sources describe cleartext exposure of sensitive credentials in UART boot logs, mapped to CWE-200 and CWE-284. CVSS 3.1 is 2.0 with AV:P, AC:H, PR:N, UI:N, C:L, I:N, A:N. Vendor response and official remediation are not documented in the provided sources.
Likely exposure
Exposure is mainly limited to organizations using Beetel 777VR1 routers where attackers, contractors, visitors, or insiders can physically access hardware and UART pins. Remote-only attackers are not indicated by the CVSS vector or description.
Exploitation context
The source bundle states a public exploit exists, but the issue is not listed as KEV and no cited source confirms active exploitation. Exploitation is described as difficult and high complexity, requiring physical device access.
Researcher notes
Evidence is limited to VulDB/CVE-style reporting and a public proof reference. The vulnerable UART component is not further specified. No official vendor advisory or patch is cited, and the vendor reportedly did not respond. Avoid assuming remote exploitability.
Mitigation direction
- Inventory Beetel 777VR1 routers and identify firmware versions 01.00.09 and 01.00.09_55.
- Restrict physical access to deployed routers, especially in shared or public areas.
- Check Beetel or service-provider guidance for firmware updates or replacement recommendations.
- Treat exposed device credentials as potentially compromised if UART access cannot be ruled out.
- Rotate router or administrative credentials where operationally feasible.
Validation and detection
- Confirm whether any Beetel 777VR1 devices are present in the environment.
- Record firmware versions and compare against 01.00.09 and 01.00.09_55.
- Review physical security controls around accessible routers.
- Check whether device boot logs expose sensitive information through UART in authorized lab testing.
- Monitor vendor, ISP, and CVE sources for official remediation updates.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-200: Information exposure and cloud metadata lookup
Information exposure and SSRF weaknesses can make discovery, cloud metadata, and credential material review relevant. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCWE-284: Authorization and privilege behavior lookup
Authorization weaknesses can support privilege escalation and valid-account review, depending on exploit path. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCVE-2026-1407 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Low
- CVSS
- 2 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:P/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N/E:P/RL:X/RC:R
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:P/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N/E:P/RL:X/RC:R0.51.4Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
2LowVector: CVSS:3.1/AV:P/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N/E:P/RL:X/RC:R
Source materials
- CVE List V5 sourceCVE List V5
- VDB-342796 | Beetel 777VR1 UART information disclosureCVE reference · vdb-entry, technical-description
- VDB-342796 | CTI Indicators (IOB, IOC, TTP)CVE reference · signature, permissions-required
- Submit #736322 | Beetel Beetel 777VR1 Broadband Router Firmware Version: V01.00.09 / V01.00.09_55 Cleartext Exposure of Sensitive Credentials in Boot Logs - UARTCVE reference · third-party-advisory
- https://gist.github.com/raghav20232023/253c041842f622d9c2cb6ee4111c2227CVE reference · exploit
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Exposure of Sensitive Information to an Unauthorized Actor
Exposure of Sensitive Information to an Unauthorized Actor represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.
Improper Access Control
Improper Access Control represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.