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Vulnerability record · CVE-2019-6110 · published 31 January 2019

CVE-2019-6110: Openbsd openssh vulnerability

Openbsd · Openssh

In OpenSSH 7.9, due to accepting and displaying arbitrary stderr output from the server, a malicious server (or Man-in-The-Middle attacker) can manipulate the client output, for example to use ANSI control codes to hide additional files being transferred.

6.8 CVSS 3.1 Medium EPSS 25% · top 2.1% CWE-838 · CWE-838
6.8CVSS 3.1 base score, v2 4.0
25%EPSS exploitation probability, 30 days
NoNot in CISA KEV
7Affected product versions listed by NVD
16References, 2 tagged exploit
14 Oct 2026Last modified by NVD

Description

In OpenSSH 7.9, due to accepting and displaying arbitrary stderr output from the server, a malicious server (or Man-in-The-Middle attacker) can manipulate the client output, for example to use ANSI control codes to hide additional files being transferred.

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

Affected products

7 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf PatchThird Party Advisory
https://cvsweb.openbsd.org/src/usr.bin/ssh/progressmeter.c Release Notes
https://cvsweb.openbsd.org/src/usr.bin/ssh/scp.c Release Notes
https://security.gentoo.org/glsa/201903-16 Third Party Advisory
https://security.netapp.com/advisory/ntap-20190213-0001/ Third Party Advisory
https://sintonen.fi/advisories/scp-client-multiple-vulnerabilities.txt Third Party Advisory
https://www.exploit-db.com/exploits/46193/ ExploitThird Party AdvisoryVDB Entry
https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf PatchThird Party Advisory
https://cvsweb.openbsd.org/src/usr.bin/ssh/progressmeter.c Release Notes
https://cvsweb.openbsd.org/src/usr.bin/ssh/scp.c Release Notes
https://security.gentoo.org/glsa/201903-16 Third Party Advisory
https://security.netapp.com/advisory/ntap-20190213-0001/ Third Party Advisory
https://sintonen.fi/advisories/scp-client-multiple-vulnerabilities.txt Third Party Advisory
https://www.exploit-db.com/exploits/46193/ ExploitThird Party AdvisoryVDB Entry
https://cert-portal.siemens.com/productcert/html/ssa-398330.html
https://cert-portal.siemens.com/productcert/html/ssa-412672.html

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2019-6110), CISA KEV, FIRST EPSS (scores of 2026-11-13). This page is refreshed as NVD updates the record.