CVE-2019-5040

Name: CVE-2019-5040
Creator: NVD / NIST
Published: 2019-08-20T21:15:13.31+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 0.78%

Last modified Jun 17, 2026

CVE-2019-5040 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. 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. EPSS estimates a 0.78% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

7.5/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

EPSS Probability

0.78%

51.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Openweave	Openweave-Core	4.0.2
Google	Nest Cam Iq Indoor Firmware	4620002

References

https://talosintelligence.com/vulnerability_reports/TALOS-2019-0803Exploit, Third Party Advisory
https://talosintelligence.com/vulnerability_reports/TALOS-2019-0803Exploit, Third Party Advisory

Timeline

Published: Aug 20, 2019
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2019-5040?

How severe is CVE-2019-5040?

CVE-2019-5040 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 0.78% probability of exploitation in the next 30 days.

How do I fix CVE-2019-5040?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2019-5040?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST