CVE-2026-2192
Published: 08 February 2026
Summary
CVE-2026-2192 is a high-severity Improper Restriction of Operations within the Bounds of a Memory Buffer (CWE-119) vulnerability in Tenda Ac9 Firmware. Its CVSS base score is 7.2 (High).
Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked at the 34.5th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.
Threat & Defense at a Glance
Threat & Defense Details
Likely Mitigating ControlsAI
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.
Ongoing control assessments and code testing (static/dynamic analysis, fuzzing) surface memory buffer restriction failures, which are then remediated before release.
Managed runtimes used by platform-independent applications (e.g., JVM, CLR) enforce memory safety, preventing most buffer overflows that require direct memory manipulation.
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.
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
Stack-based buffer overflow in router web form (formGetRebootTimer) enables remote arbitrary code execution on a public-facing network device.
NVD Description
A security vulnerability has been detected in Tenda AC9 15.03.06.42_multi. Affected by this vulnerability is the function formGetRebootTimer. Such manipulation of the argument sys.schedulereboot.start_time/sys.schedulereboot.end_time leads to stack-based buffer overflow. The attack may be launched remotely. The exploit has been disclosed…
more
publicly and may be used.
Deeper analysisAI
CVE-2026-2192 is a stack-based buffer overflow vulnerability affecting the Tenda AC9 router on firmware version 15.03.06.42_multi. The flaw resides in the formGetRebootTimer function, where manipulation of the arguments sys.schedulereboot.start_time and sys.schedulereboot.end_time triggers the overflow. Published on 2026-02-08, it is associated with CWEs-119 (Improper Restriction of Operations within the Bounds of a Memory Buffer) and CWE-121 (Stack-based Buffer Overflow).
The vulnerability enables remote exploitation over the network (AV:N) with low attack complexity (AC:L) but requires high privileges (PR:H) and no user interaction (UI:N), maintaining unchanged scope (S:U). Successful attacks can achieve high impacts on confidentiality, integrity, and availability (C:H/I:H/A:H), with an overall CVSS v3.1 score of 7.2, potentially allowing arbitrary code execution or device takeover by a privileged remote attacker.
Advisories and exploit details are documented on VulDB (ctiid.344895, id.344895, submit.749801) and a GitHub repository at github.com/glkfc/IoT-Vulnerability/blob/main/Tenda/tenda4.md, which includes the publicly disclosed exploit. The vendor's site at tenda.com.cn is also referenced, though specific mitigation or patch guidance is not detailed in the available information.
The exploit has been publicly disclosed and may be used, increasing the risk for unpatched Tenda AC9 devices running the affected firmware.
Details
- CWE(s)