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CVE-2026-82946medium6.5

Null Pointer Dereference in Mailbox Error Handling

Impact

SOEM version 2.0.0 and earlier has a null pointer dereference vulnerability, allowing a malicious device to crash the master system by sending a specific sequence of messages. The software clears an internal pointer after an error response but attempts to use it if another message arrives before timeout. An attacker can trigger this with two messages.

Summarized by @cf/meta/llama-3.3-70b-instruct-fp8-fast. Verify details against the original sources.

Affected packages

This source has no supported package-version data for matching. You can read the advisory here, but this record alone cannot power a dependency check.

Affected products

Vendor version evidence. Product records are separate from automatic dependency matching.

RT-Labs AB · ENISA

SOEM

1 range
ENISA version evidence

Compare with this publisher’s ranges. This does not inspect your installation.

affected

0 → before 2.0.1

semver versions

unaffected

unknown

Other versions: unaffected

Original source description

SOEM version 2.0.0 and earlier contains a vulnerability where a malicious device can crash the master system. When the software receives an error response, it clears an internal pointer but continues processing. If another message arrives before timeout, the software attempts to use the cleared pointer, causing a crash. An attacker can trigger this with a simple sequence of two messages.

Inside the record

Evidence available

Package identity · not supplied
Version evidence
Remediation guidance · not supplied
Weakness classification
Additional publishers

Describes the evidence in this view, not whether the product is safe.

Original records

CVE-2026-82946

View the latest unmodified CVE JSON from the official source. It may be newer than this imported page.

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Underlying weaknesses

The source’s classification of what caused the vulnerability.

CWE-476 ↗

CWE-476 NULL pointer dereference

ENISA

Related →
CWE-690 ↗

CWE-690 Unchecked Return Value to NULL Pointer Dereference

ENISA

Related →
Contributing organizations · 2
ENISA

Assigning organization

2026-10-26
CISA-ADP

Additional data publisher

2026-10-26

What changed

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References

1 sources
rt-labs.com/wp-content/uploads/2026/10/RRTL-260921-01.pdf
vendor-advisoryENISA