CVE-2019-6110

Exp

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.

Published: 2019-01-31 Last update: 2025-12-18 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2019-6110 is rated High Exploit Risk (81.6/100): CVSS Medium severity, with high exploitation likelihood (EPSS 57.57%, 98th percentile). 3 public exploit reference(s) are indexed (Exploit-DB). EPSS rose +6.28% over the last day, indicating growing attacker interest. Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Public exploit references (Exploit-DB) for CVE-2019-6110

EDB-ID Source Kind Published Link
46193 exploit_db edb 2019-01-18 Exploit-DB ↗
46516 exploit_db edb 2019-01-11 Exploit-DB ↗
— nvd_ref exploit_tag Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2019-6110

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-04-02 51.29% 57.57% +6.28%
2 2026-03-04 41.22% 51.29% +10.07%
3 2026-03-01 — 41.22% —

Full EPSS history (56 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2019-6110

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
6.8 3.1 MEDIUM
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:H)
Even with access, the exploit needs extra luck, timing, or a fussy environment to actually work.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:R)
A real person has to do something—click, install, enable—otherwise it doesn’t land.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:N)
Service keeps running; no real outage angle.
 1.6 5.2 [email protected]
6.8 3.1 MEDIUM
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:H)
Even with access, the exploit needs extra luck, timing, or a fussy environment to actually work.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:R)
A real person has to do something—click, install, enable—otherwise it doesn’t land.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:N)
Service keeps running; no real outage angle.
 1.6 5.2 134c704f-9b21-4f2e-91b3-4a467353bcc0
4.0 2.0 MEDIUM
AV:N/AC:H/Au:N/C:P/I:P/A:N Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:H)
Exploitation requires uncommon or highly specific conditions.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:N)
No availability impact.
 4.9 4.9 [email protected]

Weakness enumeration for CVE-2019-6110

OS Trackers for CVE-2019-6110

vendor priority summary link
alpine — CVE-2019-6110: 1 source package rows (openssh); 15 state rows across 5 repos (3.19-main, 3.20-main, 3.21-main, 3.22-main, edge-main); fixed 0, open 15. https://security.alpinelinux.org/vuln/CVE-2019-6110
debian unimportant CVE-2019-6110 unimportant priority: Debian including 1 source packages (openssh), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): open 5. https://security-tracker.debian.org/tracker/CVE-2019-6110
gentoo normal CVE-2019-6110: 1 GLSA(s) (201903-16), 1 atom(s) (net-misc/openssh); latest impact normal. https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2019-6110
redhat medium — https://access.redhat.com/security/cve/CVE-2019-6110
suse medium CVE-2019-6110 severity moderate: SUSE including 352 source package names (amazon/suse-sles-15-sp1-chost-byos-v20210304-hvm-ssd-x86_64, amazon/suse-sles-15-sp1-chost-byos-v20220127-hvm-ssd-x86_64, …), 527 product×package rows across 76 product lines (SUSE CaaS Platform 3.0, SUSE CaaS Platform 4.0, … (76 product lines)): Fixed 276, Known Affected 157, Known Not Affected 94. https://www.suse.com/security/cve/CVE-2019-6110/
ubuntu low CVE-2019-6110 low priority: Ubuntu including 2 source packages (openssh, openssh-ssh1), 16 status rows across 8 suites (bionic, cosmic, disco, eoan, focal, trusty, upstream, xenial): ignored 13, DNE 2, needs-triage 1. https://ubuntu.com/security/CVE-2019-6110

Affected software / configurations for CVE-2019-6110

Vendor Product Version Raw CPE
openbsd openssh <= 7.9 cpe:2.3:a:openbsd:openssh:*:*:*:*:*:*:*:*
winscp winscp <= 5.13 cpe:2.3:a:winscp:winscp:*:*:*:*:*:*:*:*
netapp element_software — cpe:2.3:a:netapp:element_software:-:*:*:*:*:*:*:*
netapp ontap_select_deploy — cpe:2.3:a:netapp:ontap_select_deploy:-:*:*:*:*:*:*:*
netapp storage_automation_store — cpe:2.3:a:netapp:storage_automation_store:-:*:*:*:*:*:*:*
siemens scalance_x204rna_firmware < 3.2.7 cpe:2.3:o:siemens:scalance_x204rna_firmware:*:*:*:*:*:*:*:*
siemens scalance_x204rna_eec_firmware < 3.2.7 cpe:2.3:o:siemens:scalance_x204rna_eec_firmware:*:*:*:*:*:*:*:*

References for CVE-2019-6110

cvelogic Threat Intelligence