Public vulnerability disclosure

CVE-2026-113363

CVE-2026-113363

publishedCWE-749

Improper Input Validation in the network communication processing in NEC Corporation WebSAM WinShare Ver 7.2.0 through 7.5.0, Ver 7.6.0 and Ver 7.7.0 through 7.7.2 on Windows allows a remote unauthenticated attacker to execute arbitrary commands with SYSTEM privileges via a crafted network packet sent to the computer on which WinShare is running.

Technical severity9.3 criticalCVSS 4.0 · CNA: NEC
Published2026-11-09Source updated 2026-11-09
Collected2026-11-091 attributed source

Fixes and workarounds

No remediation reported in collected sources.

Missing remediation information is not evidence that no patch exists.

Affected products and versions

Affected products, source version ranges and reporting authorities
ProductVersionsAuthority
WebSAM WinShare
NEC Corporation
Ver 7.2.0 through 7.5.0, Ver 7.6.0 and Ver 7.7.0 through 7.7.2 (affected)
Other versions: unaffected
CNA: NEC

Version ranges are source assertions. Check the vendor advisory and your installed configuration before determining exposure.

CVSS assessments

CVSS scores, vectors and reporting authorities
Version / scoreVectorAuthority
4.0 / 9.3
critical
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:NCNA: NEC

Exploit evidence

No exploit evidence in collected sources. This is not proof of no exploitation.

References

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