Is CVE-2019-6109 in the CISA KEV catalog?

No. CVE-2019-6109 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2019-6109?

CVE-2019-6109 has a CVSS v3 base score of 6.8 (MEDIUM).

What is the EPSS score for CVE-2019-6109?

CVE-2019-6109 has an EPSS score of 3.81% (89th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2019-6109?

Upgrade openssh on debian 11 to 1:7.9p1-6 or later. Fixes are available for 3 affected products.

CVE & CISA-KEV Catalog

CVE-2019-6109

MEDIUMEPSS 89th pctl

6.8

CVSS v3

NVD

Description

An issue was discovered in OpenSSH 7.9. Due to missing character encoding in the progress display, a malicious server (or Man-in-The-Middle attacker) can employ crafted object names to manipulate the client output, e.g., by using ANSI control codes to hide additional files being transferred. This affects refresh_progress_meter() in progressmeter.c.

CWE-116

How to fix

Remediation Available

opensshDebian

Fixed in:1:7.9p1-6CVE-2019-6109

opensshUbuntu

Fixed in:1:6.6p1-2ubuntu2.12USN-3885-1

Fixed in:1:7.2p2-4ubuntu2.7USN-3885-1

Fixed in:1:7.6p1-4ubuntu0.2USN-3885-1

openssh-clientUbuntu

Fixed in:1:6.6p1-2ubuntu2.12USN-3885-1

Fixed in:1:7.2p2-4ubuntu2.7USN-3885-1

Fixed in:1:7.6p1-4ubuntu0.2USN-3885-1

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityHigh

Privileges RequiredNone

User InteractionRequired

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityNone

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

Exploit Intelligence

3.81%probability of exploitation in 30 days

89thpercentile

Elevated risk: more likely to be exploited than 89% of all known CVEs.

References

Patch2

Vendor Advisory2

Third-Party Advisory7

Other references2

Embed a live status badge for CVE-2019-6109

Markdown

[![CVE-2019-6109](https://tridentstack.com/cve/badge/CVE-2019-6109.svg)](https://tridentstack.com/cve/CVE-2019-6109)

HTML

<a href="https://tridentstack.com/cve/CVE-2019-6109"><img src="https://tridentstack.com/cve/badge/CVE-2019-6109.svg" alt="CVE-2019-6109"></a>

Find and fix vulnerabilities across your fleet

TridentStack Control continuously scans your Windows, macOS, and Linux fleet for known vulnerabilities, prioritizes them by severity and active exploitation, and patches them automatically.

Start free

This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-05-28.