What’s Vulnerable › Vulnerabilities

CVE-2019-5040

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.8% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2019-08-20 · updated 2026-06-17
• Weakness: CWE-190

Description

An exploitable information disclosure vulnerability exists in the Weave MessageLayer parsing of Openweave-core version 4.0.2 and Nest Cam IQ Indoor version 4620002. A specially crafted weave packet can cause an integer overflow to occur, resulting in PacketBuffer data reuse. An attacker can send a packet to trigger this vulnerability.

Affected products

• Nest Labs: 4620002
• Openweave-Core: 4.0.2

References

• https://talosintelligence.com/vulnerability_reports/TALOS-2019-0803
• https://talosintelligence.com/vulnerability_reports/TALOS-2019-0803

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