Raw vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HSummary
CVE-2025-70802 is a high-severity Use of Hard-coded Password (CWE-259) vulnerability in Tenda G1 Firmware. Its CVSS base score is 8.4 (High).
Operationally, exploitation aligns with the MITRE ATT&CK technique Valid Accounts (T1078); ranked at the 8th 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 map to IA-5 (Authenticator Management) — see the control section below for these in your framework.
Deeper analysis AI-assisted summary
Synthesised by an AI model from the NVD description and linked references — a reading aid, not an authoritative source.
CVE-2025-70802 is a hardcoded password vulnerability (CWE-259) in the Tenda G1V3.1si firmware version V16.01.7.8, specifically within the /etc_ro/shadow file. This flaw allows attackers to authenticate as the root user by exploiting the static credentials embedded in the system. The vulnerability was published on 2026-03-10 and carries a CVSS v3.1 base score of 8.4 (AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H), indicating high severity due to its potential for complete system compromise.
Exploitation requires local access to the affected device, with low attack complexity, no privileges, and no user interaction needed. An attacker with such access—such as through physical proximity or prior network foothold—can use the hardcoded password to log in as root, achieving high-impact unauthorized access that compromises confidentiality, integrity, and availability of the router.
Advisories and further details are available in the vulnerability report at https://github.com/vuln-1/vuln/blob/main/Tenda/G1V3.1si_V16.01.7.8/report-1.md and on the Tenda website at https://www.tendacn.com/. No specific patch or mitigation steps are outlined in the provided references.
OWASP Top 10 for Web (2025)
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2025-208540
Vulnerability Data
Tenda G1V3.1si V16.01.7.8 Firmware V16.01.7.8 was discovered to contain a hardcoded password vulnerability in /etc_ro/shadow, which allows attackers to log in as root.
- CWE(s)
Related Threats
MITRE ATT&CK Enterprise Techniques
CVEs Like This One
Affected Assets
Mitigating Controls
Mitigating Controls (NIST 800-53 r5) AI
Authenticator management requires secure distribution, rotation, and verification of credentials, directly stopping hard-coded passwords from being introduced or used.
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.
Secure SDLC practices directly prohibit embedding credentials in source code or binaries.
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.
Requiring users to change temporary or default passwords at first use stops the continued existence of hard-coded or guessable passwords that are shipped with the product.