CVE-2019-16905

HIGH
7.8
CVSS Score
Published: October 9, 2019 at 12:00 AM UTC
Updated: October 14, 2026 at 07:16 AM UTC
5 products affected across 3 vendorsCloud BackupSteelstore Cloud Integrated StorageOpenSSH· also runs on 2 platforms

Using N/A by N/A?

Get instant alerts when new vulnerabilities affect N/A - before attackers find them.

Real-time alertsTrack your software stackFree plan available
Severity
HIGH7.8
Exploit prediction
EPSS 2%

Description

OpenSSH 7.7 through 7.9 and 8.x before 8.1, when compiled with an experimental key type, has a pre-authentication integer overflow if a client or server is configured to use a crafted XMSS key. This leads to memory corruption and local code execution because of an error in the XMSS key parsing algorithm. NOTE: the XMSS implementation is considered experimental in all released OpenSSH versions, and there is no supported way to enable it when building portable OpenSSH.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

All versions
7.7 ≤ v ≤ 7.98.0 ≤ v < 8.1
Affected range stops below 8.1, so it looks safe — our inference, not a vendor statement
v < 3.2.7
Affected range stops below 3.2.7, so it looks safe — our inference, not a vendor statement
siemens-scalance-x204rna-ecc (same device)
v < 3.2.7
Affected range stops below 3.2.7, so it looks safe — our inference, not a vendor statement
siemens-scalance-x204rna (same device)

Runs on — not affected

The affected product only carries this flaw when running on these platforms. The platforms themselves are not vulnerable.

CVSS

Attack Vector
LOCAL
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-190

Get alerted

Stop reading CVE feeds looking for your own stack

Track the products you run and VulnTracker tells you when a new CVE affects them — with what is known about fixing it, and nothing about the rest.

Free plan, no card