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CVE-2026-82782

MEDIUM
4.3
CVSS Score
Published: September 14, 2026 at 06:42 AM UTC
Updated: September 16, 2026 at 07:44 PM UTC
3 products affected across 1 vendorCpsn MCB271Cpsn EOB471EICpsn PCB271

Using Remote I/O Coupler Unit (Server Type) CPSN-MCB271-* by Contec Co., Ltd.?

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Severity
MEDIUM4.3
Exploit prediction
EPSS 0.5%
SSVC
No known exploit

Description

Out-of-bounds write vulnerability exists in CONPROSYS nano Series. Receiving a specially crafted request created and sent by a remote attacker may cause a denial-of-service (DoS) condition.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Cpsn EOB471EI· Contec
60%
v < 1.02
Affected range stops below 1.02, so it looks safe — our inference, not a vendor statement
Cpsn MCB271· Contec
60%
v < 1.82
Affected range stops below 1.82, so it looks safe — our inference, not a vendor statement
Cpsn PCB271· Contec
60%
v < 1.61
Affected range stops below 1.61, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (2)

Source: cverecord
https://www.contec.com/api/downloadlogger?download=/-/media/Contec/support/security-info/2026/contec_security_cps_26091000_en.pdf
Source: cverecord
https://jvn.jp/en/vu/JVNVU96551518/

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

4.3MEDIUMjpcert
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-787

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