CVE-2019-5038: An exploitable command execution vulnerability exists in the print-tlv command of Weave tool

This month

HIGH 8.8DOWNGRADE

CVE-2019-5038 is a high-severity flaw (CVSS 8.8) affecting openweave-core. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

An exploitable command execution vulnerability exists in the print-tlv command of Weave tool. A specially crafted weave TLV can trigger a stack-based buffer overflow, resulting in code execution. An attacker can trigger this vulnerability by convincing the user to open a specially crafted Weave command.

Why this priority

High severity
Public exploit reference

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	8.8 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	2.7% (top 14%)
CISA exploited list	No
Weakness	CWE-121, CWE-787
Published	2019-08-20
Last modified	2026-06-17

Publisher (CNA): Talos · Vendor: openweave

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2019-08-20 21:15 UTCPublished CVE record published
2026-06-17 02:37 UTCUpdated Record last modified

openweave openweave-core DOWNGRADE

Affected: 4.0.2

Fixed in: no fixed release known

Safe to downgrade to: a release before 4.0.2

1. Check installed version

apt-cache policy openweave-core || rpm -q openweave-core || openweave-core --version

2. No fixed release: DOWNGRADE to a release before 4.0.2 (Debian / Ubuntu)

apt-cache madison openweave-core sudo apt install openweave-core=<VERSION_BEFORE_4.0.2> sudo apt-mark hold openweave-core

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list openweave-core sudo dnf downgrade openweave-core-<VERSION_BEFORE_4.0.2> sudo dnf versionlock add openweave-core

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2019-5038?

openweave-core: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2019-5038 being exploited?

CVE-2019-5038 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2019-5038 affect?

CVE-2019-5038 affects openweave-core. Severity is high (CVSS 8.8). An exploitable command execution vulnerability exists in the print-tlv command of Weave tool. A specially crafted weave TLV can trigger a stack-based buffer overflow, resulting in code execution. An attacker can trigger this vulnerability b

How urgent is CVE-2019-5038?

Priority 57/100. High severity; Public exploit reference

Related CVEs

CVE-2019-5040 HIGH 7.5 DOWNGRADE MITIGATE An exploitable information disclosure vulnerability exists in the Weave MessageLayer parsing of Openweave-core
CVE-2019-5039 HIGH 8.8 DOWNGRADE An exploitable command execution vulnerability exists in the ASN1 certificate writing functionality of Openwea

References

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