CVE-2019-6110
CWE-838Published: January 31, 2019· Updated: Jun 17, 2026
Official 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.
Technical Analysis
CVE-2019-6110 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.
Exploitation does not require any privileges, though user interaction (Required) is needed, which slightly reduces the risk of mass automated attacks.
A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), with a CVSS base score of 6.8.
A proof-of-concept (PoC) exploit exists for CVE-2019-6110. While not yet confirmed in active campaigns, the availability of PoC code increases exploitation risk substantially.
CVSS v3.1 Vector Breakdown
Affected Vendors & Products
Exploit & PoC Resources
Official Patches & Advisories
All References (14)
Quick Facts
Related CVEs (CWE-838)
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2019-6110 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts