CVE-2025-7077
Published: 06 July 2025
Summary
CVE-2025-7077 is a high-severity Improper Restriction of Operations within the Bounds of a Memory Buffer (CWE-119) vulnerability in Szlbt Lbt-T300-T310 Firmware. Its CVSS base score is 7.4 (High).
Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked in the top 20.6% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.
Deeper analysis
A buffer overflow vulnerability exists in Shenzhen Libituo Technology LBT-T300-T310 devices up to version 2.2.3.6. The flaw resides in the config_3g_para function within the /appy.cgi endpoint and is triggered by crafted values supplied to the username_3g and password_3g parameters. It is tracked as CVE-2025-7077, carries a CVSS 4.0 score of 7.4, and is associated with CWE-119 and CWE-120.
An authenticated remote attacker can send a malicious HTTP request to the affected CGI handler and trigger memory corruption. Successful exploitation yields full control over the device, allowing arbitrary code execution that compromises confidentiality, integrity, and availability. A working exploit has already been published on GitHub.
No vendor patch or mitigation guidance has been issued; the vendor was notified but did not respond. Public references consist of disclosure repositories and vulnerability database entries that simply restate the technical details without additional remediation steps. The associated EPSS score remains flat at 0.0121.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2025-20133
Vulnerability details
A vulnerability classified as critical has been found in Shenzhen Libituo Technology LBT-T300-T310 up to 2.2.3.6. This affects the function config_3g_para of the file /appy.cgi. The manipulation of the argument username_3g/password_3g leads to buffer overflow. It is possible to initiate…
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the attack remotely. The exploit has been disclosed to the public and may be used. Other parameters might be affected as well. 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?
Remote buffer overflow (CWE-120) in public-facing web CGI endpoint (/appy.cgi config_3g_para) via oversized username_3g/password_3g parameters enables exploitation of public-facing applications and remote services, with public PoC available.
Affected Assets
Mitigating Controls
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.
Managed runtimes used by platform-independent applications (e.g., JVM, CLR) enforce memory safety, preventing most buffer overflows that require direct memory manipulation.
Ongoing control assessments and code testing (static/dynamic analysis, fuzzing) surface memory buffer restriction failures, which are then remediated before release.
Memory protections (e.g., W^X, ASLR) make exploitation of buffer-boundary violations far harder to turn into code execution.
Detects exploitation attempts that produce memory corruption, crashes, or anomalous behavior.