CVE-2026-82989

State: Published
Severity: 9.8 Critical
Published: Oct 5, 2026
Updated: Oct 6, 2026
Reserved: Aug 31, 2026

Description

There is an input injection in vCast exposed network services in ViewSonic ViewBoard that allows a remote, unauthenticated attacker to inject arbitrary input into service endpoints via network-based HTTP requests to unauthenticated endpoints

Scores

CVSS	Score	Vector	Source
3.1	9.8 Critical	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H	CISA-ADP

Weaknesses

CWE-147 Improper Neutralization of Input Terminators
CWE-74 Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')

Affected Products

Product	Versions
vCastViewsonic	v0.0.0 through v3.2.715Affected

References

https://blog.l3afs.space/posts/Vcast-Viewsonic-RCE-chain/
https://kb.cert.org/vuls/id/234131

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