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Vulnerabilities

Vulnerability · CVE-2019-6110

OpenBSD openssh Inappropriate Encoding for Output Context

Published Jan 31, 2019 · catalog updated Oct 14, 2026 · OpenBSD

Patch now

CVE-2019-6110 is in the CISA known-exploited catalog. Confirm OpenBSD against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Gaps on this record

  • No version range is stored. A customer cannot check an installed version against this record.
Severity
Medium6.8
Known exploitation
CISA KEV and VulnCheck KEV
EPSS
24.90%
Remediation
Remediation guidance
Affected products
cpe netapp/element software · cpe netapp/ontap select deploy · cpe netapp/storage automation store · cpe openbsd/openssh · cpe siemens/scalance x204rna eec firmware · cpe siemens/scalance x204rna firmware

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.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • cpe netapp/element softwareversion unspecified
  • cpe netapp/ontap select deployversion unspecified
  • cpe netapp/storage automation storeversion unspecified
  • cpe openbsd/opensshversion unspecified
  • cpe siemens/scalance x204rna eec firmwareversion unspecified
  • cpe siemens/scalance x204rna firmwareversion unspecified
  • cpe winscp/winscpversion unspecified
  • vendor OpenBSD opensshversion unspecified

How to fix CVE-2019-6110

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

CVE-2019-6110 is in the CISA known-exploited catalog. Confirm OpenBSD against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Which versions are affected?

Affected version ranges are not on this record. Apply remediations or mitigations per vendor instructions or discontinue use of the product if remediation or mitigations are unavailable.

What should an analyst verify?

CWE-838. EPSS 24.90%. The CISA KEV listing is the exploitation evidence. A public exploit reference is linked in Sources. That is not the same as confirmed exploitation. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Jan 31, 2019 · NIST NVD

    Detected

    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.

  2. Jul 19, 2020 · CISA KEV

    Known exploited

    Apply remediations or mitigations per vendor instructions or discontinue use of the product if remediation or mitigations are unavailable.

  3. Oct 14, 2026 · NIST NVD

    Updated

    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.

Sources

  • CVE.orgVulnerability recordCVE-2019-6110

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2019-6110

    30-day exploitation probability 24.9%

    first.org
  • Exploit DatabasePublic exploit reference46193

    Public archive entry. The exploit body is not stored here.

    exploit-db.com
  • Exploit DatabasePublic exploit reference46516

    Public archive entry. The exploit body is not stored here.

    exploit-db.com
  • NIST NVDVulnerability recordCVE-2019-6110

    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.

    nvd.nist.gov
  • VulnCheck KEVConfirmed exploitationCVE-2019-6110

    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.

    vulncheck.com

References

Freshness

Last verified in this catalog Oct 17, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.