CVE-2026-82989

Summary

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

Affected Software

Weaknesses

• CWE-147 Improper Neutralization of Input During Web Page Generation (“Input Injection”)
• CWE-74 Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')

References

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

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