CVE-2026-59996: scp in OpenSSH before 10.4 may place a file in the parent directory of an intended directory when the copy occurs between two remote destina
Noroxi assessment
Priority: Monitor (action score 21/100)
- The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
- Probability of exploitation in the next 30 days: 0.25% (FIRST EPSS).
- 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. No special conditions are required; it is repeatable.
- Fixed version: azl3 openssh 9.8p1-8 on Azure Linux 3.0 9.8p1-9.
Low priority for now. Upgrade to azl3 openssh 9.8p1-8 on Azure Linux 3.0 9.8p1-9 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
scp in OpenSSH before 10.4 may place a file in the parent directory of an intended directory when the copy occurs between two remote destinations.
- Published
- Jul 8, 2026
- Updated
- Oct 25, 2026
- EPSS
- 0.2% · 16th percentile
- CWE
- CWE-23
Report tools
Action score
21
Monitor
Low priority for now.
- CVSS
- 21 / 40 · 5.4 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 0 / 30 · 0.2%
CISA SSVC decision
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
Vulnrichment: CISA's decision-tree inputs.
CNA vs NVD score
- NVD
- 5.4
- CNA · mitre
- 4.2
- 1.2 point gap
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:L
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
- No public exploit code on record
- 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 |
Is OpenSSH on your server exposed to the internet?
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Run a port scanAffected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- openbsd opensshbefore 10.4
Versions reported by the vendor
Affected version ranges reported by the assigning authority (mitre). Independent of NVD's CPE analysis and usually ahead of it.
OpenBSD OpenSSH
- before 10.4affected
Package-level exposure
OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.
| Ecosystem | Package | Affected range | Fix |
|---|---|---|---|
| AlmaLinux:10 | openssh | before 9.9p1-25.el10_2.alma.1 | 9.9p1-25.el10_2.alma.1 |
| AlmaLinux:10 | openssh-askpass | before 9.9p1-25.el10_2.alma.1 | 9.9p1-25.el10_2.alma.1 |
| AlmaLinux:10 | openssh-clients | before 9.9p1-25.el10_2.alma.1 | 9.9p1-25.el10_2.alma.1 |
| AlmaLinux:10 | openssh-keycat | before 9.9p1-25.el10_2.alma.1 | 9.9p1-25.el10_2.alma.1 |
| AlmaLinux:10 | openssh-keysign | before 9.9p1-25.el10_2.alma.1 | 9.9p1-25.el10_2.alma.1 |
| AlmaLinux:10 | openssh-server | before 9.9p1-25.el10_2.alma.1 | 9.9p1-25.el10_2.alma.1 |
| AlmaLinux:9 | openssh | before 9.9p1-9.el9_8.alma.1 | 9.9p1-9.el9_8.alma.1 |
| AlmaLinux:9 | openssh-askpass | before 9.9p1-9.el9_8.alma.1 | 9.9p1-9.el9_8.alma.1 |
| AlmaLinux:9 | openssh-clients | before 9.9p1-9.el9_8.alma.1 | 9.9p1-9.el9_8.alma.1 |
| AlmaLinux:9 | openssh-keycat | before 9.9p1-9.el9_8.alma.1 | 9.9p1-9.el9_8.alma.1 |
| AlmaLinux:9 | openssh-server | before 9.9p1-9.el9_8.alma.1 | 9.9p1-9.el9_8.alma.1 |
| AlmaLinux:9 | pam_ssh_agent_auth | before 0.10.4-7.9.el9_8.alma.1 | 0.10.4-7.9.el9_8.alma.1 |
| Alpine:v3.24 | openssh | before 10.3_p1-r1 | 10.3_p1-r1 |
| Debian:12 | openssh | from 0 | — |
| Debian:14 | openssh | before 1:10.4p1-1 | 1:10.4p1-1 |
| openSUSE:Leap 16.0 | openssh | before 10.0p2-160000.7.1 | 10.0p2-160000.7.1 |
| openSUSE:Leap 16.0 | openssh-askpass-gnome | before 10.0p2-160000.7.1 | 10.0p2-160000.7.1 |
| Red Hat:enterprise_linux_eus:10.0 | openssh | before 0:9.9p1-7.el10_0.5 | 0:9.9p1-7.el10_0.5 |
| Red Hat:enterprise_linux_eus:10.0 | openssh-askpass | before 0:9.9p1-7.el10_0.5 | 0:9.9p1-7.el10_0.5 |
| Red Hat:enterprise_linux_eus:10.0 | openssh-clients | before 0:9.9p1-7.el10_0.5 | 0:9.9p1-7.el10_0.5 |
| Red Hat:enterprise_linux_eus:10.0 | openssh-keycat | before 0:9.9p1-7.el10_0.5 | 0:9.9p1-7.el10_0.5 |
| Red Hat:enterprise_linux_eus:10.0 | openssh-keysign | before 0:9.9p1-7.el10_0.5 | 0:9.9p1-7.el10_0.5 |
| Red Hat:enterprise_linux_eus:10.0 | openssh-server | before 0:9.9p1-7.el10_0.5 | 0:9.9p1-7.el10_0.5 |
| Red Hat:enterprise_linux:10.2 | openssh | before 0:9.9p1-25.el10_2 | 0:9.9p1-25.el10_2 |
+47
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-2026-55655Jun 23, 2026 · Openssh: local mitm of x11 forwarding via abstract unix socket pre-binding in red hat enterprise linux openssh client versions24Monitor
- ← EarlierCVE-2026-59995Jul 8, 2026 · sftp in OpenSSH before 10.4 does not properly constrain the location of downloaded files when "sftp server:/path ." is used with an attacker21Monitor
- Later →CVE-2026-59997Jul 8, 2026 · internal-sftp in sshd in OpenSSH before 10.4 recognizes only the first 9 command-line arguments, which can be important if a later command-l21Monitor
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 |
|---|---|---|
| azl3 openssh 9.8p1-8 on Azure Linux 3.0 | 9.8p1-9 · CBL-Mariner Releases | Microsoft (MSRC) |
| almalinux:openssh | 9.9p1-9.el9_8.alma.1 · AlmaLinux:9 | Package registry (OSV) |
| almalinux:openssh-askpass | 9.9p1-9.el9_8.alma.1 · AlmaLinux:9 | Package registry (OSV) |
| almalinux:openssh-clients | 9.9p1-9.el9_8.alma.1 · AlmaLinux:9 | Package registry (OSV) |
| almalinux:openssh-keycat | 9.9p1-9.el9_8.alma.1 · AlmaLinux:9 | Package registry (OSV) |
| almalinux:openssh-keysign | 9.9p1-25.el10_2.alma.1 · AlmaLinux:10 | Package registry (OSV) |
| almalinux:openssh-server | 9.9p1-9.el9_8.alma.1 · AlmaLinux:9 | Package registry (OSV) |
| almalinux:pam_ssh_agent_auth | 0.10.4-7.9.el9_8.alma.1 · AlmaLinux:9 | Package registry (OSV) |
| alpine:openssh | 10.3_p1-r1 · Alpine:v3.24 | Package registry (OSV) |
| debian:openssh | 1:10.4p1-1 · Debian:14 | Package registry (OSV) |
| opensuse:openssh | 10.0p2-160000.7.1 · openSUSE:Leap 16.0 | Package registry (OSV) |
| opensuse:openssh-askpass-gnome | 10.0p2-160000.7.1 · openSUSE:Leap 16.0 | Package registry (OSV) |
| red hat:openssh | 0:10.4p1-1.hum1 · Red Hat:hummingbird:1 | Package registry (OSV) |
| red hat:openssh-askpass | 0:10.4p1-1.hum1 · Red Hat:hummingbird:1 | Package registry (OSV) |
| red hat:openssh-askpass | 0:9.9p1-9.el9_8 · Red Hat:enterprise_linux:9::appstream | Package registry (OSV) |
| red hat:openssh-askpass-debuginfo | 0:9.9p1-9.el9_8 · Red Hat:enterprise_linux:9::appstream | Package registry (OSV) |
| red hat:openssh-clients | 0:10.4p1-1.hum1 · Red Hat:hummingbird:1 | Package registry (OSV) |
| red hat:openssh-clients | 0:9.9p1-9.el9_8 · Red Hat:enterprise_linux:9::baseos | Package registry (OSV) |
| red hat:openssh-clients-debuginfo | 0:9.9p1-9.el9_8 · Red Hat:enterprise_linux:9::appstream | Package registry (OSV) |
| red hat:openssh-debuginfo | 0:9.9p1-9.el9_8 · Red Hat:enterprise_linux:9::appstream | Package registry (OSV) |
| red hat:openssh-debugsource | 0:9.9p1-9.el9_8 · Red Hat:enterprise_linux:9::appstream | Package registry (OSV) |
| red hat:openssh-keycat | 0:10.4p1-1.hum1 · Red Hat:hummingbird:1 | Package registry (OSV) |
| red hat:openssh-keycat-debuginfo | 0:9.9p1-9.el9_8 · Red Hat:enterprise_linux:9::appstream | Package registry (OSV) |
| red hat:openssh-keysign | 0:10.4p1-1.hum1 · Red Hat:hummingbird:1 | Package registry (OSV) |
| red hat:openssh-server | 0:10.4p1-1.hum1 · Red Hat:hummingbird:1 | Package registry (OSV) |
| red hat:openssh-server-debuginfo | 0:9.9p1-9.el9_8 · Red Hat:enterprise_linux:9::appstream | Package registry (OSV) |
| red hat:openssh-sk-dummy | 0:10.4p1-1.hum1 · Red Hat:hummingbird:1 | Package registry (OSV) |
| red hat:openssh-sk-dummy-debuginfo | 0:9.9p1-9.el9_8 · Red Hat:enterprise_linux:9::appstream | Package registry (OSV) |
| red hat:pam_ssh_agent_auth | 0:0.10.4-7.9.el9_8 · Red Hat:enterprise_linux:9::appstream | Package registry (OSV) |
| red hat:pam_ssh_agent_auth-debuginfo | 0:0.10.4-7.9.el9_8 · Red Hat:enterprise_linux:9::appstream | Package registry (OSV) |
+3
Exploit status
No known public exploit
No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.
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.
No dated events beyond publication.
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.
- CVE-2026-10655290 days apartIn sftp in OpenSSH before 10.6, a server can trigger directory traversal (causing files to be written to unintended locations) during a recu26Monitor
- CVE-2026-599950 days apartsftp in OpenSSH before 10.4 does not properly constrain the location of downloaded files when "sftp server:/path ." is used with an attacker21Monitor
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.
- No special conditions are required; it is repeatable.
If successful
- Confidentiality
- none
- Integrity
- low · data or configuration can be modified
- Availability
- low · the service can be disrupted
- Attack vector
- Network
- Attack complexity
- Low
- Privileges required
- None
- User interaction
- Required
- Scope
- Unchanged
- Confidentiality impact
- None
- Integrity impact
- Low
- Availability impact
- Low
Weakness class (CWE)
CWE-23 · Relative Path TraversalCVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:L
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 (2 more)Show less
Vendor advisories and official records. Exploit/PoC links are deliberately left out.