CVE-2019-16905

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

2.22% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 82.3% 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 2026-10-14.

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.

Published

2019-10-09 00:00Z7 YR AGO

Last updated

2026-10-14 06:54Z15 DAYS 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

5.2

Document digest

6c08927922a49c94ba9f671a1a358286673124e33e3cf31846ec5c8b8bfe1b33

• 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
• cert-portal.siemens.comhttps://cert-portal.siemens.com/productcert/html/ssa-412672.html
• cert-portal.siemens.comhttps://cert-portal.siemens.com/productcert/html/ssa-398330.html