CVE-2025-6732
Published: 26 June 2025
Summary
CVE-2025-6732 is a high-severity Improper Restriction of Operations within the Bounds of a Memory Buffer (CWE-119) vulnerability in Utt 840G Firmware. Its CVSS base score is 7.4 (High).
Operationally, ranked in the top 18.5% 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 vulnerability classified as critical exists in the UTT HiPER 840G router firmware up to version 3.1.1-190328. It resides in the strcpy function of the /goform/setSysAdm API endpoint, where improper handling of the passwd1 argument permits a buffer overflow. The issue is tracked under CWE-119 and CWE-120 and carries a CVSS 4.0 score of 7.4.
An authenticated remote attacker can supply a specially crafted passwd1 value to the affected endpoint and trigger memory corruption. Successful exploitation may allow arbitrary code execution or denial of service on the device; a proof-of-concept has been published and the attack requires no user interaction beyond network access.
Public references consist of a GitHub repository containing exploit details and multiple Vuldb entries. The vendor was notified prior to disclosure but provided no response, and no official patches or mitigation guidance are available in the referenced sources.
The EPSS score has remained flat at 0.0149 with no material increase since publication.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2025-19241
Vulnerability details
A vulnerability was found in UTT HiPER 840G up to 3.1.1-190328. It has been classified as critical. This affects the function strcpy of the file /goform/setSysAdm of the component API. The manipulation of the argument passwd1 leads to buffer overflow.…
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It is possible to initiate the attack remotely. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
- CWE(s)
Related Threats
No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.
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.