# CVE-2026-10159: TRENDnet TEW-432BRP stack overflow in formSysLog

Source: https://junglewise.ai/threats/cve-2026-10159-trendnet-tew-432brp-stack-overflow-in-formsyslog  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-05-31. Updated: 2026-05-31  
License: CC BY 4.0 with a link back

CVE-2026-10159 · Severity: high · CVSS 8.8 · Published 2026-05-31

A security vulnerability exists in the TRENDnet TEW-432BRP wireless router, a device used to provide internet connectivity in home and small office environments. An attacker can exploit this flaw to crash the router or potentially take full control of the device by sending a specially crafted web request. Because this product reached its end-of-life in 2009, the manufacturer will not be providing any security updates or fixes.

Technologies: [TRENDnet TEW-432BRP](https://junglewise.ai/threats/technologies/tew-432brp). Vendors: [TRENDnet](https://junglewise.ai/threats/vendors/trendnet).

## Quick answers

**Is CVE-2026-10159 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-10159 being exploited in the wild.

**How severe is CVE-2026-10159?** High severity, with a CVSS score of 8.8, published 31 May 2026.

**Which products and versions are affected?** TRENDnet TEW-432BRP 3.10B20.

**Is there a fix for CVE-2026-10159?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2026-10159 attacked?** It is attacked over the network, in a network appliance.

**Am I affected by CVE-2026-10159?** Check whether you run TRENDnet TEW-432BRP at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

A stack-based buffer overflow vulnerability exists in the 'boa' binary of the TRENDnet TEW-432BRP router, specifically within the 'formSysLog' function handled via the '/goform/formSysLog' endpoint. The vulnerability is triggered by a lack of bounds checking on the 'current_page' (or 'webpage' as noted in PoC) parameter, which is copied directly into a local stack variable. A remote attacker with low privileges (authenticated access) can exploit this by sending a POST request with an oversized string, leading to the overwriting of the function's return address. This can result in a persistent denial of service (device crash) or remote code execution. No patch is available as the device has been EOL since 2009.

## Affected products

- TRENDnet TEW-432BRP 3.10B20

## Timeline

- 2009: other: Product reached End-of-Life (EOL)
- 2026-05-31: disclosed: Vulnerability details and PoC published

## References

- [https://github.com/wudipjq/my_vuln/blob/main/TRENDnet/vuln_12/12.md](https://github.com/wudipjq/my_vuln/blob/main/TRENDnet/vuln_12/12.md)
- [https://vuldb.com/submit/814769](https://vuldb.com/submit/814769)
- [https://vuldb.com/vuln/367412](https://vuldb.com/vuln/367412)
- [https://vuldb.com/vuln/367412/cti](https://vuldb.com/vuln/367412/cti)

## Related threats

- [TRENDnet TEW-432BRP stack buffer overflow in formTcpipSetup](https://junglewise.ai/threats/cve-2026-109157-a-vulnerability-was-found-in-trendnet-tew-432brp-3-10b20)
- [TRENDnet TEW-432BRP stack overflow in formWlanSetup](https://junglewise.ai/threats/cve-2026-10183-trendnet-tew-432brp-stack-overflow-in-formwlansetup)
- [TRENDnet TEW-432BRP command injection in formWlanSetup](https://junglewise.ai/threats/cve-2026-10182-trendnet-tew-432brp-command-injection-in-formwlansetup)
- [TRENDnet TEW-432BRP stack overflow in formSysCmd](https://junglewise.ai/threats/cve-2026-10181-trendnet-tew-432brp-stack-overflow-in-formsyscmd)
- [TRENDnet TEW-432BRP command injection in formSysCmd](https://junglewise.ai/threats/cve-2026-10180-trendnet-tew-432brp-command-injection-in-formsyscmd)