CVE-2026-82989CWE-147CWE-74

CVE-2026-82989

Critical · published October 6, 2026

CVSS v3.1
9.8
EPSS
1%
Percentile
51.2
In the wild
Unconfirmed
What it is

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

The record
Technical detail
CVSS v3.1
9.8 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00666 · 51.2th percentile
Weaknesses
CWE-147 · Improper Neutralization of Input Terminators; CWE-74 · Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')
Published
2026-10-06T04:16Z
References (2)
https://blog.l3afs.space/posts/Vcast-Viewsonic-RCE-chain/ · [email protected]https://kb.cert.org/vuls/id/234131 · [email protected]
EPSS history
Timeline
  • 07 OCT 03:43Z
    EPSS moved — → 0%
    epss
  • 05 OCT 23:14Z
    CVE-2026-82989
    cvelistv5