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Vulnerability details: VCID-6hv1-umzh-5bf7
Vulnerability ID VCID-6hv1-umzh-5bf7
Aliases CVE-2019-16905
Summary openssh: an integer overflow in the private key parsing code for the XMSS key type
Status Published
Exploitability 0.5
Weighted Severity 7.9
Risk 4.0
Affected and Fixed Packages Package Details
Weaknesses (1)
CWE-190 Integer Overflow or Wraparound
System Score Found at
cvssv3 8.8 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2019-16905.json
epss 0.00123 https://api.first.org/data/v1/epss?cve=CVE-2019-16905
epss 0.00123 https://api.first.org/data/v1/epss?cve=CVE-2019-16905
epss 0.00123 https://api.first.org/data/v1/epss?cve=CVE-2019-16905
epss 0.00222 https://api.first.org/data/v1/epss?cve=CVE-2019-16905
epss 0.00222 https://api.first.org/data/v1/epss?cve=CVE-2019-16905
epss 0.00222 https://api.first.org/data/v1/epss?cve=CVE-2019-16905
epss 0.00247 https://api.first.org/data/v1/epss?cve=CVE-2019-16905
epss 0.00247 https://api.first.org/data/v1/epss?cve=CVE-2019-16905
epss 0.00247 https://api.first.org/data/v1/epss?cve=CVE-2019-16905
epss 0.00269 https://api.first.org/data/v1/epss?cve=CVE-2019-16905
epss 0.00269 https://api.first.org/data/v1/epss?cve=CVE-2019-16905
epss 0.00269 https://api.first.org/data/v1/epss?cve=CVE-2019-16905
epss 0.00269 https://api.first.org/data/v1/epss?cve=CVE-2019-16905
epss 0.00269 https://api.first.org/data/v1/epss?cve=CVE-2019-16905
epss 0.00269 https://api.first.org/data/v1/epss?cve=CVE-2019-16905
epss 0.00269 https://api.first.org/data/v1/epss?cve=CVE-2019-16905
epss 0.00269 https://api.first.org/data/v1/epss?cve=CVE-2019-16905
epss 0.00269 https://api.first.org/data/v1/epss?cve=CVE-2019-16905
epss 0.00269 https://api.first.org/data/v1/epss?cve=CVE-2019-16905
epss 0.00269 https://api.first.org/data/v1/epss?cve=CVE-2019-16905
epss 0.00269 https://api.first.org/data/v1/epss?cve=CVE-2019-16905
epss 0.00269 https://api.first.org/data/v1/epss?cve=CVE-2019-16905
epss 0.00269 https://api.first.org/data/v1/epss?cve=CVE-2019-16905
epss 0.00269 https://api.first.org/data/v1/epss?cve=CVE-2019-16905
epss 0.00269 https://api.first.org/data/v1/epss?cve=CVE-2019-16905
epss 0.00269 https://api.first.org/data/v1/epss?cve=CVE-2019-16905
epss 0.00269 https://api.first.org/data/v1/epss?cve=CVE-2019-16905
epss 0.00269 https://api.first.org/data/v1/epss?cve=CVE-2019-16905
cvssv2 4.4 https://nvd.nist.gov/vuln/detail/CVE-2019-16905
cvssv3.1 7.8 https://nvd.nist.gov/vuln/detail/CVE-2019-16905
Reference id Reference type URL
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2019-16905.json
https://api.first.org/data/v1/epss?cve=CVE-2019-16905
https://bugzilla.suse.com/show_bug.cgi?id=1153537
https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-16905
https://cvsweb.openbsd.org/cgi-bin/cvsweb/src/usr.bin/ssh/sshkey-xmss.c
https://cvsweb.openbsd.org/cgi-bin/cvsweb/src/usr.bin/ssh/sshkey-xmss.c.diff?r1=1.5&r2=1.6&f=h
https://security.gentoo.org/glsa/201911-01
https://security.netapp.com/advisory/ntap-20191024-0003/
https://ssd-disclosure.com/archives/4033/ssd-advisory-openssh-pre-auth-xmss-integer-overflow
https://www.openssh.com/releasenotes.html
https://www.openwall.com/lists/oss-security/2019/10/09/1
1767966 https://bugzilla.redhat.com/show_bug.cgi?id=1767966
cpe:2.3:a:netapp:cloud_backup:-:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:netapp:cloud_backup:-:*:*:*:*:*:*:*
cpe:2.3:a:netapp:steelstore_cloud_integrated_storage:-:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:netapp:steelstore_cloud_integrated_storage:-:*:*:*:*:*:*:*
cpe:2.3:a:openbsd:openssh:*:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:openbsd:openssh:*:*:*:*:*:*:*:*
CVE-2019-16905 https://nvd.nist.gov/vuln/detail/CVE-2019-16905
No exploits are available.
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H Found at https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2019-16905.json
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: AV:L/AC:M/Au:N/C:P/I:P/A:P Found at https://nvd.nist.gov/vuln/detail/CVE-2019-16905
Exploitability (E) Access Vector (AV) Access Complexity (AC) Authentication (Au) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

high

functional

unproven

proof_of_concept

not_defined

local

adjacent_network

network

high

medium

low

multiple

single

none

none

partial

complete

none

partial

complete

none

partial

complete
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Found at https://nvd.nist.gov/vuln/detail/CVE-2019-16905
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Exploit Prediction Scoring System (EPSS)
Percentile 0.32442
EPSS Score 0.00123
Published At Aug. 1, 2025, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2025-07-31T10:33:09.582448+00:00 RedHat Importer Import https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2019-16905.json 37.0.0