CVE-2026-82357

Device crash via unchecked LSS identity lookup

Published Oct 1, 2026 · Updated Oct 1, 2026

A null pointer dereference in RT-Labs AB C-Open before 1.1.1 allows remote attackers on the CAN bus to crash a device through LSS. The co_lss_inquire_identity() handler passes a NULL result from co_entry_find() for a missing 0x1018 subindex to co_od_get_value(), which dereferences it. Exploitation requires CAN-bus access, an application-defined Identity Object missing a required subindex, and two unauthenticated LSS frames.

CVSS severity6.5
Medium
EPSS probability0.29%
Next 30 days · Oct 19, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

A null pointer dereference in RT-Labs AB C-Open before 1.1.1 allows remote attackers on the CAN bus to crash a device through LSS. The co_lss_inquire_identity() handler passes a NULL result from co_entry_find() for a missing 0x1018 subindex to co_od_get_value(), which dereferences it. Exploitation requires CAN-bus access, an application-defined Identity Object missing a required subindex, and two unauthenticated LSS frames.

The record

CVE
CVE-2026-82357
Published
Oct 1, 2026
Updated
Oct 1, 2026
Vendor
RT-Labs AB
Product
C-Open
Classifications
CWE-476, T0814
Attack vector
adjacent
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 1, 2026CVE publishedPublication date reported by the CVE source.
  2. Oct 1, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected version>1.1.1 <*
  2. Affected versionversion=0 <1.1.1

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

RT-Labs AB · C-Open>1.1.1 <*; version=0 <1.1.1

Published CVSS scores

6.5RT-Labs ABCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Activity data is delayed. The latest report is Sep 28, 2026.

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No observations available

Sep 22, 2026Sep 28, 2026
Latest reporting daySep 28, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectoradjacent
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-476NULL Pointer Dereference
T0814Denial of Service

Public exploit references

No public exploit references are available in this record.

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Technologies

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