CVE-2018-3840

Severity: high (CVSS 7.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.6% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2018-06-26 · updated 2026-06-17
Weakness: CWE-20

Description

A denial-of-service vulnerability exists in the Pixar Renderman IT Display Service 21.6 (0x67). The vulnerability is present in the parsing of a network packet without proper validation of the packet. The data read by the application is not validated, and its use can lead to a null pointer dereference. The IT application is opened by a user and then listens for a connection on port 4001. An attacker can deliver an attack once the application has been opened.

Affected products

Talos Pixar Renderman: 21.6

References

https://talosintelligence.com/vulnerability_reports/TALOS-2018-0523
https://talosintelligence.com/vulnerability_reports/TALOS-2018-0523

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