CVE-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)
Noroxi assessment
Priority: Monitor (action score 34/100)
- Public proof-of-concept code exists (Exploit-DB); there is no record of exploitation in the wild.
- Probability of exploitation in the next 30 days: 24.9% (FIRST EPSS); higher than 97.8% of all records.
- Anyone who can reach it over the internet can trigger it. No account or password is required. A user must open a link or visit a page. Special conditions such as timing or configuration are required.
- Fixed version: openssh (openSUSE:Leap 15.0) 7.6p1-lp150.8.9.1; openssh (openSUSE:Tumbleweed) 8.4p1-7.4; openssh (SUSE:Linux Enterprise Module for Basesystem 15) 7.6p1-9.13.1.
Low priority for now. Upgrade to openssh (openSUSE:Leap 15.0) 7.6p1-lp150.8.9.1; openssh (openSUSE:Tumbleweed) 8.4p1-7.4; openssh (SUSE:Linux Enterprise Module for Basesystem 15) 7.6p1-9.13.1 or later.
Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it
Primary sources: NVD · CVE.org · FIRST EPSS
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
- Jan 31, 2019
- Updated
- Oct 14, 2026
- EPSS
- 24.9% · 97th percentile
- CWE
- CWE-838
Report tools
Action score
34
Monitor
Low priority for now.
- CVSS
- 27 / 40 · 6.8 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 7 / 30 · 24.9%
CISA SSVC decision
- Exploitation
- proof of concept
- Automatable
- no
- Technical impact
- total
Vulnrichment: CISA's decision-tree inputs.
CNA vs NVD score
- NVD
- 6.8
- CNA · mitre
- 6.8
- agree
The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.
Get told when this record changes
- Not in KEV: no record of exploitation in the wild
- Proof of concept exists, no weaponized module
- A fix has been released
If any of these changes, we'll tell you in the daily email digest.
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Noroxi analysis
What does it mean in your environment?
The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.
We use this product, ask for helpAffected systems
Is your version affected?
Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.
| Vendor | Product | CPE |
|---|---|---|
| openbsd | openssh | cpe:2.3:a:openbsd:openssh |
| winscp | winscp | 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 | cpe:2.3:o:siemens:scalance_x204rna_firmware |
| siemens | scalance x204rna | cpe:2.3:h:siemens:scalance_x204rna |
| siemens | scalance x204rna eec firmware | cpe:2.3:o:siemens:scalance_x204rna_eec_firmware |
| siemens | scalance x204rna eec | cpe:2.3:h:siemens:scalance_x204rna_eec |
Is OpenSSH on your server exposed to the internet?
The free port scanner finds the open ports on your server and matches the service versions it can read against known vulnerabilities. No account needed.
Run a port scanAffected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- netapp element softwareall versions
- netapp ontap select deployall versions
- netapp storage automation storeall versions
- openbsd opensshup to 7.9 inclusive
- siemens scalance x204rna eec firmwarebefore 3.2.7
- siemens scalance x204rna firmwarebefore 3.2.7
- winscp winscpup to 5.13 inclusive
Package-level exposure
OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.
| Ecosystem | Package | Affected range | Fix |
|---|---|---|---|
| Debian:12 | openssh | from 0 | — |
| openSUSE:Leap 15.0 | openssh | before 7.6p1-lp150.8.9.1 | 7.6p1-lp150.8.9.1 |
| openSUSE:Tumbleweed | openssh | before 8.4p1-7.4 | 8.4p1-7.4 |
| SUSE:Linux Enterprise Module for Basesystem 15 | openssh | before 7.6p1-9.13.1 | 7.6p1-9.13.1 |
| SUSE:Linux Enterprise Module for Desktop Applications 15 | openssh-askpass-gnome | before 7.6p1-9.13.1 | 7.6p1-9.13.1 |
| SUSE:Linux Enterprise Server 11 SP4 | openssh | before 6.6p1-36.12.1 | 6.6p1-36.12.1 |
| SUSE:Linux Enterprise Server 11 SP4 | openssh-askpass-gnome | before 6.6p1-36.12.1 | 6.6p1-36.12.1 |
| SUSE:Linux Enterprise Server 12-LTSS | openssh | before 6.6p1-54.26.1 | 6.6p1-54.26.1 |
| SUSE:Linux Enterprise Server 12-LTSS | openssh-askpass-gnome | before 6.6p1-54.26.1 | 6.6p1-54.26.1 |
| SUSE:OpenStack Cloud 7 | openssh | before 7.2p2-74.35.1 | 7.2p2-74.35.1 |
| SUSE:OpenStack Cloud 7 | openssh-askpass-gnome | before 7.2p2-74.35.1 | 7.2p2-74.35.1 |
Same product
openbsd: all recordsOther highest-scoring records for the same primary product.
- CVE-2023-38408The PKCS#11 feature in ssh-agent in OpenSSH before 9.3p2 has an insufficiently trustworthy search path, leading to remote code execution if 63This week
- CVE-2018-15473OpenSSH through 7.7 is prone to a user enumeration vulnerability due to not delaying bailout for an invalid authenticating user until after 60This week
- CVE-2016-6210sshd in OpenSSH before 7.3, when SHA256 or SHA512 are used for user password hashing, uses BLOWFISH hashing on a static password when the us60This week
Published before and after this one in the same product
- ← EarlierCVE-2018-20685Jan 10, 2019 · In OpenSSH 7.9, scp.c in the scp client allows remote SSH servers to bypass intended access restrictions via the filename of .22Monitor
- ← EarlierCVE-2019-6109Jan 31, 2019 · An issue was discovered in OpenSSH 7.9.28Monitor
- Later →CVE-2019-6111Jan 31, 2019 · An issue was discovered in OpenSSH 7.9.40Plan
Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
| Product / package | Fixed version | Source |
|---|---|---|
| opensuse:openssh | 7.6p1-lp150.8.9.1 · openSUSE:Leap 15.0 | Package registry (OSV) |
| suse:openssh | 6.6p1-54.26.1 · SUSE:Linux Enterprise Server 12-LTSS | Package registry (OSV) |
| suse:openssh-askpass-gnome | 6.6p1-54.26.1 · SUSE:Linux Enterprise Server 12-LTSS | Package registry (OSV) |
Exploit status
Proof of concept available
A public proof of concept or detection signature exists. Exploit knowledge is out there; don't delay patching.
Evidence
- Exploit-DB entry ×2
Noroxi does not host or link to exploit code. Metasploit module names and Nuclei template ids are shown (names, not code); Exploit-DB entries and PoC repositories are given as counts only.
| Source | Kind | Date |
|---|---|---|
| Exploit-DB entry | remote | 2019-01-11 |
| Exploit-DB entry | remote | 2019-01-18 |
Research context
For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.
Timeline
From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.
- First PoC-21 d
- Published
- TodayOct 26, 2026+2825 d
FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).
Patch and commit links
Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.
No commit or PR link among the references.
Credits
All researchersFinders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.
No credits in the CNA record.
Variant candidates
Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.
No nightly-computed relations.
Chain candidates
An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.
—
Bug bounty scope
No known public program.
Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).
Technical details
Attack conditions
- Anyone who can reach it over the internet can trigger it.
- No account or password is required.
- A user must open a link or visit a page.
- Special conditions such as timing or configuration are required.
If successful
- Confidentiality
- high · data can be read
- Integrity
- high · data or configuration can be modified
- Availability
- none
- Attack vector
- Network
- Attack complexity
- High
- Privileges required
- None
- User interaction
- Required
- Scope
- Unchanged
- Confidentiality impact
- High
- Integrity impact
- High
- Availability impact
- None
Weakness class (CWE)
CWE-838 · Inappropriate Encoding for Output ContextCVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N
nvd-primary
Attack context
MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.
Attack patterns (CAPEC)
ATT&CK techniques
—
Change log
- Fix✗ → ✓
For records you follow, these changes also arrive as notifications. →
References
Show all references (7 more)Show less
- cvsweb.openbsd.org/src/usr.bin/ssh/progressmeter.c
- cvsweb.openbsd.org/src/usr.bin/ssh/scp.c
- security.gentoo.org/glsa/201903-16
- security.netapp.com/advisory/ntap-20190213-0001/
- sintonen.fi/advisories/scp-client-multiple-vulnerabilities.txt
- cert-portal.siemens.com/productcert/html/ssa-398330.html
- cert-portal.siemens.com/productcert/html/ssa-412672.html
Vendor advisories and official records. Exploit/PoC links are deliberately left out.