01 Record

CVE-2019-16905

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

UnratedPUBLISHEDCNA: mitre

CNA base scoreUnratedNo CNA CVSS vector

View raw JSON

02 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

03 Exploitation and scoring

Exploitation: Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
SSVC decision: Not assessed by CISA
EPSS probability: 2.17% probability of exploitation activity in the next 30 days.
EPSS percentile: Ranks above 80.7% of scored records. A rank, not a probability.
NVD base score: 7.8 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD analysis status: Modified. NVD last modified this record on 2026-06-17.
Red Hat severity: Important. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published

2019-10-09 00:00Z6 YR AGO

Last updated

2025-04-23 15:45Z1 YR AGO

Reserved

2019-09-26

Assigning CNA

mitre

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

CWE-190Integer Overflow or WraparoundBase

Data version

5.1

Document digest

c2e02b6cbd9ba5da4553b483145fa4950d336ea716f6446ddedc74402410e763

05 Affected products

VendorProductVersionsPlatforms

netappcloud_backupNot specified—

netappsteelstore_cloud_integrated_storageNot specified—

openbsdopensshNot specified—

redhatenterprise_linuxNot specified—

siemensscalance_x204rnaNot specified—

siemensscalance_x204rna_eccNot specified—

siemensscalance_x204rna_ecc_firmwareNot specified—

siemensscalance_x204rna_firmwareNot specified—

06 References

www.openssh.comhttps://www.openssh.com/releasenotes.html
www.openwall.comhttps://www.openwall.com/lists/oss-security/2019/10/09/1
cvsweb.openbsd.orghttps://cvsweb.openbsd.org/cgi-bin/cvsweb/src/usr.bin/ssh/sshkey-xmss.c.diff?r1=1.5&r2=1.6&f=h
cvsweb.openbsd.orghttps://cvsweb.openbsd.org/cgi-bin/cvsweb/src/usr.bin/ssh/sshkey-xmss.c
bugzilla.suse.comhttps://bugzilla.suse.com/show_bug.cgi?id=1153537
ssd-disclosure.comhttps://ssd-disclosure.com/archives/4033/ssd-advisory-openssh-pre-auth-xmss-integer-overflow
security.netapp.comhttps://security.netapp.com/advisory/ntap-20191024-0003/
security.gentoo.orgGLSA-201911-01https://security.gentoo.org/glsa/201911-01vendor-advisory
cert-portal.siemens.comhttps://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf

01 Record index

CVE-2019-16905

02 Description

03 Exploitation and scoring

04 Metadata

05 Affected products

06 References

02 Records

CVE-2019-16905

02 Description

03 Exploitation and scoring

04 Metadata

05 Affected products

06 References