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Medium 4.3Published Sep 14, 2026
CVE-2026-82782Out-of-bounds write vulnerability exists in CONPROSYS nano Series.
Updated under an hour ago ()
Does this affect you?
It affects Contec Co., Ltd. Remote I/O Coupler Unit (Server Type) CPSN-MCB271-* and 2 other products. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- 4.3 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
- Weakness (CWE)
- CWE-787
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- jpcert
- NVD analysis
- Deferred
- Record last updated
- Sep 14, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Contec Co., Ltd. Remote I/O Coupler Unit (Server Type) CPSN-MCB271-* contec:remote_i_o_coupler_unit_server_type_cpsn_mcb271 (from the name) | before 1.82 | CNA record |
Contec Co., Ltd. Remote I/O Coupler Unit (EtherNet/IP Adapter) CPSN-EOB471EI-[]1 contec:remote_i_o_coupler_unit_ethernet_ip_adapter_cpsn_eob471ei_1 (from the name) | before 1.02 | CNA record |
Contec Co., Ltd. Programmable Remote I/O Coupler Unit (Software PLC Type) CPSN-PCB271-S1-041 contec:programmable_remote_i_o_coupler_unit_software_plc_type_cpsn_pcb271_s1_041 (from the name) | before 1.61 | CNA record |
References
- https://www.contec.com/api/downloadlogger?download=/-/media/Contec/support/security-info/2026/contec_security_cps_26091000_en.pdf
- https://jvn.jp/en/vu/JVNVU96551518/
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.