Quick answers
- Is CVE-2026-113364 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-113364 being exploited in the wild.
- How severe is CVE-2026-113364?
- Informational severity, published 9 November 2026.
- Which products and versions are affected?
- Nec WebSAM Winshare 7.5.0 and earlier, 7.6.0, and 7.7.0 through 7.7.2.
- Is there a fix for CVE-2026-113364?
- 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-2026-113364 attacked?
- It is attacked over the network, in an operating system.
- Am I affected by CVE-2026-113364?
- Check whether you run Nec WebSAM Winshare 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 buffer overflow exists in the data receiving process of the network protocol handler, triggered by a malformed data size value in the protocol header. The vulnerability is remotely exploitable without authentication over the network. Successful exploitation results in arbitrary code execution with SYSTEM privileges on the affected Windows system.
Affected products
- NEC WebSAM WinShare 7.5.0 and earlier, 7.6.0, and 7.7.0 through 7.7.2
Timeline
- 2026-11-09: disclosed