Severity by source
AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Attacker needs no local privileges (PR:N) but root must actively run scp with legacy -O and no -p against a hostile source, so UI:R and AC:H; setuid-root outcome yields full C/I/A impact.
AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
Primary rating from NVD.
CVSS VectorNVD
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Lifecycle Timeline
13DescriptionNVD
In OpenSSH before 10.3, a file downloaded by scp may be installed setuid or setgid, an outcome contrary to some users' expectations, if the download is performed as root with -O (legacy scp protocol) and without -p (preserve mode).
AnalysisAI
Privilege-escalation exposure in OpenSSH before 10.3 (fixed in 10.3p1) where scp, when run by root using the legacy SCP protocol flag -O and without -p (preserve mode), may write a downloaded file with setuid or setgid bits set, contrary to user expectation. A malicious or compromised SSH server (or a man-in-the-middle on the transfer) could thereby cause an attacker-controlled binary to land on disk as a setuid/setgid-root executable, enabling local privilege escalation when it is later run. There is no public exploit identified at time of analysis, EPSS is very low (0.04%), and CISA SSVC rates exploitation as 'none' though technical impact as 'total'.
Technical ContextAI
OpenSSH's scp historically used the legacy SCP/RCP wire protocol, selectable via the -O flag after newer releases defaulted to SFTP. In that legacy mode the remote side transmits file metadata including permission bits. Normally scp only honors transmitted modes when -p (preserve) is requested; the defect (CWE-281, Improper Preservation of Permissions) is that under the specific combination of running as root with -O and without -p, the setuid (04000) and setgid (02000) bits can be applied to the resulting local file even though the user did not ask to preserve modes. The affected component is the OpenBSD OpenSSH client (cpe:2.3:a:openbsd:openssh) across all versions below 10.3. Because setuid/setgid-root binaries execute with elevated privileges regardless of the invoking user, an unexpectedly setuid file sourced from an untrusted server becomes a direct privilege-escalation primitive.
RemediationAI
Vendor-released patch: upgrade to OpenSSH 10.3 / 10.3p1 or later (per https://www.openssh.org/releasenotes.html#10.3p1), or apply your distribution's fixed package - Ubuntu USN-8222-1 and the Red Hat RHSA errata listed above deliver the backported fix. Until patched, the practical compensating controls map directly to the trigger conditions: avoid using the legacy SCP protocol flag -O when running scp as root, since the modern SFTP-based default transfer is not affected (trade-off: scripts pinned to -O for compatibility with old servers must be reviewed); do not run scp as root against untrusted or third-party servers, instead pull files as an unprivileged user and chown/chmod afterward; and if -O must be used, always pass -p so mode handling is explicit, or post-process downloads to strip setuid/setgid bits (e.g. chmod a-st on the destination) before any execution. Auditing for unexpected setuid/setgid files (find / -perm -4000 -o -perm -2000) is advisable on hosts where root-initiated legacy scp downloads may have already occurred.
GNU Bash through 4.3 processes trailing strings after function definitions in the values of environment variables, which
GNU Bash through 4.3 bash43-026 does not properly parse function definitions in the values of environment variables, whi
GNU Bash through 4.3 bash43-025 processes trailing strings after certain malformed function definitions in the values of
freeSSHd.exe in freeSSHd through 1.2.6 allows remote attackers to bypass authentication via a crafted session, as demons
GNU Bash through 4.3 bash43-026 does not properly parse function definitions in the values of environment variables, whi
OpenSSH server (sshd) 9.1 introduced a double-free vulnerability during options.kex_algorithms handling. Rated medium se
sshd in OpenSSH before 7.3, when SHA256 or SHA512 are used for user password hashing, uses BLOWFISH hashing on a static
The kbdint_next_device function in auth2-chall.c in sshd in OpenSSH through 6.9 does not properly restrict the processin
The auth_password function in auth-passwd.c in sshd in OpenSSH before 7.3 does not limit password lengths for password a
Remote code execution in OpenSSH's sshd server (regression of CVE-2006-5051) allows unauthenticated remote attackers to
The SSH USERAUTH CHANGE REQUEST feature in SSH Tectia Server 6.0.4 through 6.0.20, 6.1.0 through 6.1.12, 6.2.0 through 6
The SSH transport protocol with certain OpenSSH extensions, found in OpenSSH before 9.6 and other products, allows remot
Same weakness CWE-281 – Improper Preservation of Permissions
View allSame technique Information Disclosure
View allVendor StatusVendor
SUSE
Severity: High| Product | Status |
|---|---|
| SLES15-SP5-CHOST-BYOS-SAP-CCloud | Fixed |
| SLES15-SP6-CHOST-BYOS | Fixed |
| SLES15-SP6-CHOST-BYOS-Aliyun | Fixed |
| SLES15-SP6-CHOST-BYOS-Azure | Fixed |
| SLES15-SP6-CHOST-BYOS-EC2 | Fixed |
| SLES15-SP6-CHOST-BYOS-GCE | Fixed |
| SLES15-SP6-CHOST-BYOS-GDC | Fixed |
| SLES15-SP6-CHOST-BYOS-SAP-CCloud | Fixed |
| SLES15-SP7-CHOST-BYOS-Aliyun | Fixed |
| SLES15-SP7-CHOST-BYOS-Azure | Fixed |
| SLES15-SP7-CHOST-BYOS-EC2 | Fixed |
| SLES15-SP7-CHOST-BYOS-GCE | Fixed |
| SLES15-SP7-CHOST-BYOS-GDC | Fixed |
| SLES15-SP7-CHOST-BYOS-SAP-CCloud | Fixed |
| SUSE Linux Enterprise Desktop 15 SP7 | Fixed |
| SUSE Linux Enterprise High Performance Computing 15 SP7 | Fixed |
| SUSE Linux Enterprise Micro 5.2 | Fixed |
| SUSE Linux Enterprise Micro 5.3 | Fixed |
| SUSE Linux Enterprise Micro 5.4 | Fixed |
| SUSE Linux Enterprise Micro 5.5 | Fixed |
| SUSE Linux Enterprise Module for Basesystem 15 SP7 | Fixed |
| SUSE Linux Enterprise Module for Desktop Applications 15 SP7 | Fixed |
| SUSE Linux Enterprise Server 15 SP7 | Fixed |
| SUSE Linux Enterprise Server 16.0 | Fixed |
| SUSE Linux Enterprise Server 16.1 | Fixed |
| SUSE Linux Enterprise Server for SAP Applications 15 SP7 | Fixed |
| SUSE Linux Enterprise Server for SAP applications 16.0 | Fixed |
| SUSE Linux Enterprise Server for SAP applications 16.1 | Fixed |
| SUSE Linux Micro 6.0 | Fixed |
| SUSE Linux Micro 6.1 | Fixed |
| SUSE Linux Micro 6.2 | Fixed |
| openSUSE Leap 15.6 | Fixed |
| SLES15-SP3-CHOST-BYOS-Aliyun | Fixed |
| SLES15-SP3-CHOST-BYOS-Azure | Fixed |
| SLES15-SP3-CHOST-BYOS-EC2 | Fixed |
| SLES15-SP3-CHOST-BYOS-GCE | Fixed |
| SLES15-SP3-CHOST-BYOS-SAP-CCloud | Fixed |
| SLES15-SP4-CHOST-BYOS | Fixed |
| SLES15-SP4-CHOST-BYOS-Aliyun | Fixed |
| SLES15-SP4-CHOST-BYOS-Azure | Fixed |
| SLES15-SP4-CHOST-BYOS-EC2 | Fixed |
| SLES15-SP4-CHOST-BYOS-GCE | Fixed |
| SLES15-SP4-CHOST-BYOS-SAP-CCloud | Fixed |
| SLES15-SP5-CHOST-BYOS-Aliyun | Fixed |
| SLES15-SP5-CHOST-BYOS-Azure | Fixed |
| SLES15-SP5-CHOST-BYOS-EC2 | Fixed |
| SLES15-SP5-CHOST-BYOS-GCE | Fixed |
| SLES15-SP5-CHOST-BYOS-GDC | Fixed |
| SUSE Linux Enterprise High Performance Computing 15 SP4 | Fixed |
| SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS | Fixed |
| SUSE Linux Enterprise High Performance Computing 15 SP5 | Fixed |
| SUSE Linux Enterprise High Performance Computing 15 SP5-LTSS | Fixed |
| SUSE Linux Enterprise Module for Basesystem 15 SP4 | Fixed |
| SUSE Linux Enterprise Module for Basesystem 15 SP5 | Fixed |
| SUSE Linux Enterprise Module for Basesystem 15 SP6 | Fixed |
| SUSE Linux Enterprise Server 11 SP4 LTSS EXTREME CORE | Fixed |
| SUSE Linux Enterprise Server 12 SP5 | Fixed |
| SUSE Linux Enterprise Server 12 SP5 | Fixed |
| SUSE Linux Enterprise Server 12 SP5-LTSS | Fixed |
| SUSE Linux Enterprise Server 12 SP5-LTSS | Fixed |
| SUSE Linux Enterprise Server 12 SP5-LTSS Extended Security | Fixed |
| SUSE Linux Enterprise Server 12 SP5-LTSS Extended Security | Fixed |
| SUSE Linux Enterprise Server 15 SP4 | Fixed |
| SUSE Linux Enterprise Server 15 SP4-LTSS | Fixed |
| SUSE Linux Enterprise Server 15 SP5 | Fixed |
| SUSE Linux Enterprise Server 15 SP5-LTSS | Fixed |
| SUSE Linux Enterprise Server 15 SP6 | Fixed |
| SUSE Linux Enterprise Server 15 SP6-LTSS | Fixed |
| SUSE Linux Enterprise Server LTSS Extended Security 12 SP5 | Fixed |
| SUSE Linux Enterprise Server LTSS Extended Security 12 SP5 | Fixed |
| SUSE Linux Enterprise Server for SAP Applications 15 SP6 | Fixed |
| SUSE Manager Proxy 4.3 | Fixed |
| SUSE Manager Proxy LTS 4.3 | Fixed |
| SUSE Manager Retail Branch Server 4.3 | Fixed |
| SUSE Manager Retail Branch Server LTS 4.3 | Fixed |
| SUSE Manager Server 4.3 | Fixed |
| SUSE Manager Server LTS 4.3 | Fixed |
| SUSE CaaS Platform 3.0 | Fixed |
| SUSE CaaS Platform 4.0 | Fixed |
| SUSE Enterprise Storage 6 | Fixed |
| SUSE Enterprise Storage 7 | Fixed |
| SUSE Enterprise Storage 7.1 | Fixed |
| SUSE Linux Enterprise Desktop 11 SP4 | Fixed |
| SUSE Linux Enterprise Desktop 12 SP2 | Fixed |
| SUSE Linux Enterprise Desktop 12 SP3 | Fixed |
| SUSE Linux Enterprise Desktop 12 SP4 | Fixed |
| SUSE Linux Enterprise Desktop 15 SP1 | Fixed |
| SUSE Linux Enterprise Desktop 15 SP2 | Fixed |
| SUSE Linux Enterprise Desktop 15 SP3 | Fixed |
| SUSE Linux Enterprise Desktop 15 SP4 | Fixed |
| SUSE Linux Enterprise Desktop 15 SP5 | Fixed |
| SUSE Linux Enterprise Desktop 15 SP6 | Fixed |
| SUSE Linux Enterprise High Performance Computing 15 SP1 | Fixed |
| SUSE Linux Enterprise High Performance Computing 15 SP1-ESPOS | Fixed |
| SUSE Linux Enterprise High Performance Computing 15 SP1-LTSS | Fixed |
| SUSE Linux Enterprise High Performance Computing 15 SP2 | Fixed |
| SUSE Linux Enterprise High Performance Computing 15 SP2-ESPOS | Fixed |
| SUSE Linux Enterprise High Performance Computing 15 SP2-LTSS | Fixed |
| SUSE Linux Enterprise High Performance Computing 15 SP3 | Fixed |
| SUSE Linux Enterprise High Performance Computing 15 SP3-ESPOS | Fixed |
| SUSE Linux Enterprise High Performance Computing 15 SP3-LTSS | Fixed |
| SUSE Linux Enterprise High Performance Computing 15 SP4-ESPOS | Fixed |
| SUSE Linux Enterprise High Performance Computing 15 SP5-ESPOS | Fixed |
| SUSE Linux Enterprise High Performance Computing 15 SP6 | Fixed |
| SUSE Linux Enterprise Micro 5.0 | Fixed |
| SUSE Linux Enterprise Micro 5.1 | Fixed |
| SUSE Linux Enterprise Module for Basesystem 15 SP1 | Fixed |
| SUSE Linux Enterprise Module for Basesystem 15 SP2 | Fixed |
| SUSE Linux Enterprise Module for Basesystem 15 SP3 | Fixed |
| SUSE Linux Enterprise Module for Server Applications 15 SP1 | Fixed |
| SUSE Linux Enterprise Module for Server Applications 15 SP2 | Fixed |
| SUSE Linux Enterprise Module for Server Applications 15 SP3 | Fixed |
| SUSE Linux Enterprise Point of Sale 12 SP2-CLIENT | Fixed |
| SUSE Linux Enterprise Real Time 15 SP2 | Fixed |
| SUSE Linux Enterprise Real Time 15 SP3 | Fixed |
| SUSE Linux Enterprise Real Time 15 SP4 | Fixed |
| SUSE Linux Enterprise Server 11 SP4 | Fixed |
| SUSE Linux Enterprise Server 11 SP4-LTSS | Fixed |
| SUSE Linux Enterprise Server 12 SP2 | Fixed |
| SUSE Linux Enterprise Server 12 SP2-BCL | Fixed |
| SUSE Linux Enterprise Server 12 SP2-ESPOS | Fixed |
| SUSE Linux Enterprise Server 12 SP2-LTSS | Fixed |
| SUSE Linux Enterprise Server 12 SP3 | Fixed |
| SUSE Linux Enterprise Server 12 SP3-BCL | Fixed |
| SUSE Linux Enterprise Server 12 SP3-ESPOS | Fixed |
| SUSE Linux Enterprise Server 12 SP3-LTSS | Fixed |
| SUSE Linux Enterprise Server 12 SP4 | Fixed |
| SUSE Linux Enterprise Server 12 SP4-ESPOS | Fixed |
| SUSE Linux Enterprise Server 12 SP4-LTSS | Fixed |
| SUSE Linux Enterprise Server 15 SP1 | Fixed |
| SUSE Linux Enterprise Server 15 SP1-BCL | Fixed |
| SUSE Linux Enterprise Server 15 SP1-LTSS | Fixed |
| SUSE Linux Enterprise Server 15 SP2 | Fixed |
| SUSE Linux Enterprise Server 15 SP2-BCL | Fixed |
| SUSE Linux Enterprise Server 15 SP2-LTSS | Fixed |
| SUSE Linux Enterprise Server 15 SP3 | Fixed |
| SUSE Linux Enterprise Server 15 SP3-BCL | Fixed |
| SUSE Linux Enterprise Server 15 SP3-LTSS | Fixed |
| SUSE Linux Enterprise Server for Raspberry Pi 12 SP2 | Fixed |
| SUSE Linux Enterprise Server for SAP Applications 12 SP2 | Fixed |
| SUSE Linux Enterprise Server for SAP Applications 12 SP3 | Fixed |
| SUSE Linux Enterprise Server for SAP Applications 12 SP4 | Fixed |
| SUSE Linux Enterprise Server for SAP Applications 15 SP1 | Fixed |
| SUSE Linux Enterprise Server for SAP Applications 15 SP2 | Fixed |
| SUSE Linux Enterprise Server for SAP Applications 15 SP3 | Fixed |
| SUSE Linux Enterprise Server for SAP Applications 15 SP4 | Fixed |
| SUSE Linux Enterprise Server for SAP Applications 15 SP5 | Fixed |
| SUSE Manager Proxy 4.0 | Fixed |
| SUSE Manager Proxy 4.1 | Fixed |
| SUSE Manager Proxy 4.2 | Fixed |
| SUSE Manager Retail Branch Server 4.0 | Fixed |
| SUSE Manager Retail Branch Server 4.1 | Fixed |
| SUSE Manager Retail Branch Server 4.2 | Fixed |
| SUSE Manager Server 4.0 | Fixed |
| SUSE Manager Server 4.1 | Fixed |
| SUSE Manager Server 4.2 | Fixed |
| SUSE OpenStack Cloud 7 | Fixed |
| SUSE OpenStack Cloud 8 | Fixed |
| SUSE OpenStack Cloud 9 | Fixed |
| SUSE OpenStack Cloud Crowbar 8 | Fixed |
| SUSE OpenStack Cloud Crowbar 9 | Fixed |
| openSUSE Leap 15.3 | Fixed |
| openSUSE Leap 15.4 | Fixed |
| openSUSE Leap 15.5 | Fixed |
| openSUSE Leap Micro 5.2 | Fixed |
| openSUSE Leap Micro 5.3 | Fixed |
| openSUSE Leap Micro 5.4 | Fixed |
| openSUSE Leap Micro 5.5 | Fixed |
| SLES-CHOST-BYOS-Aliyun | Fixed |
| SLES-CHOST-BYOS-Azure | Fixed |
| SLES-CHOST-BYOS-EC2 | Fixed |
| SLES-CHOST-BYOS-GCE | Fixed |
| SLES-CHOST-BYOS-GDC | Fixed |
| SLES-CHOST-BYOS-SAP-CCloud | Fixed |
| kiwi-templates-Minimal kiwi-templates-Minimal-Cloud-sap kiwi-templates-Minimal-MS-HyperV-sap kiwi-templates-Minimal-VMware-sap kiwi-templates-Minimal-kvm-and-xen-sap ses/7.1/cephcsi/cephcsi ses/7.1/rook/ceph ses/7/ceph/ceph ses/7/cephcsi/cephcsi ses/7/rook/ceph suse/hpc/warewulf4-x86_64/sle-hpc-node suse/manager/4.3/proxy-ssh suse/manager/5.0/x86_64/proxy-ssh suse/manager/5.0/x86_64/server suse/multi-linux-manager/5.1/x86_64/proxy-ssh suse/multi-linux-manager/5.1/x86_64/server suse/multi-linux-manager/5.2/x86_64/proxy-ssh suse/multi-linux-manager/5.2/x86_64/server suse/sle-micro-rancher/5.2 suse/sle-micro-rancher/5.3 suse/sle-micro-rancher/5.4 suse/sle-micro/5.5 trento/trento-runner | Fixed |
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External POC / Exploit Code
Leaving vuln.today
EUVD-2026-18398
GHSA-jgqr-738j-43cg