CVE-2019-17393: The Customer's Tomedo Server in Version 1.7.3 communicates to the Vendor Tomedo Server via HTTP (in cleartext)

This month

CRITICAL 9.8REMOTEDOWNGRADE

CVE-2019-17393 is a critical-severity flaw (CVSS 9.8) affecting server. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The Customer's Tomedo Server in Version 1.7.3 communicates to the Vendor Tomedo Server via HTTP (in cleartext) that can be sniffed by unauthorized actors. Basic authentication is used for the authentication, making it possible to base64 decode the sniffed credentials and discover the username and password.

Why this priority

Critical severity
Remotely exploitable, no login, no user action

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

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	1.8% (top 21%)
CISA exploited list	No
Weakness	CWE-319, CWE-522
Published	2019-10-18
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: tomedo

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

Am I affected?

Timeline

2019-10-18 17:15 UTCPublished CVE record published
2026-06-17 02:23 UTCUpdated Record last modified

tomedo server DOWNGRADE

Affected: 1.7.3

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.7.3

1. Check installed version

apt-cache policy server || rpm -q server || server --version

2. No fixed release: DOWNGRADE to a release before 1.7.3 (Debian / Ubuntu)

apt-cache madison server sudo apt install server=<VERSION_BEFORE_1.7.3> sudo apt-mark hold server

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

dnf --showduplicates list server sudo dnf downgrade server-<VERSION_BEFORE_1.7.3> sudo dnf versionlock add server

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-2019-17393?

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

Is CVE-2019-17393 being exploited?

CVE-2019-17393 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-2019-17393 affect?

CVE-2019-17393 affects server. Severity is critical (CVSS 9.8). The Customer's Tomedo Server in Version 1.7.3 communicates to the Vendor Tomedo Server via HTTP (in cleartext) that can be sniffed by unauthorized actors. Basic authentication is used for the authentication, making it possible to base64 dec

How urgent is CVE-2019-17393?

Priority 59/100. Critical severity; Remotely exploitable, no login, no user action

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References

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