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Vulnerability details: VCID-p6ex-bypb-n3fg
Vulnerability ID VCID-p6ex-bypb-n3fg
Aliases CVE-2026-0966
Summary libssh: Buffer underflow in ssh_get_hexa() on invalid input
Status Published
Exploitability 0.5
Weighted Severity 5.9
Risk 3.0
Affected and Fixed Packages Package Details
Weaknesses (1)
CWE-124 Buffer Underwrite ('Buffer Underflow')
System Score Found at
cvssv3 6.5 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-0966.json
cvssv3 6.5 https://access.redhat.com/security/cve/CVE-2026-0966
ssvc Track https://access.redhat.com/security/cve/CVE-2026-0966
epss 0.00103 https://api.first.org/data/v1/epss?cve=CVE-2026-0966
epss 0.00103 https://api.first.org/data/v1/epss?cve=CVE-2026-0966
epss 0.00103 https://api.first.org/data/v1/epss?cve=CVE-2026-0966
epss 0.00103 https://api.first.org/data/v1/epss?cve=CVE-2026-0966
epss 0.00103 https://api.first.org/data/v1/epss?cve=CVE-2026-0966
epss 0.00103 https://api.first.org/data/v1/epss?cve=CVE-2026-0966
epss 0.00103 https://api.first.org/data/v1/epss?cve=CVE-2026-0966
epss 0.00103 https://api.first.org/data/v1/epss?cve=CVE-2026-0966
cvssv3 6.5 https://bugzilla.redhat.com/show_bug.cgi?id=2433121
ssvc Track https://bugzilla.redhat.com/show_bug.cgi?id=2433121
cvssv3.1 6.5 https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
cvssv3 6.5 https://www.libssh.org/2026/02/10/libssh-0-12-0-and-0-11-4-security-releases/
ssvc Track https://www.libssh.org/2026/02/10/libssh-0-12-0-and-0-11-4-security-releases/
Reference id Reference type URL
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-0966.json
https://api.first.org/data/v1/epss?cve=CVE-2026-0966
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-0966
https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
1127693 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1127693
2433121 https://bugzilla.redhat.com/show_bug.cgi?id=2433121
cpe:/a:redhat:hummingbird:1 https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:/a:redhat:hummingbird:1
cpe:/a:redhat:openshift:4 https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:/a:redhat:openshift:4
cpe:/o:redhat:enterprise_linux:10 https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:/o:redhat:enterprise_linux:10
cpe:/o:redhat:enterprise_linux:6 https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:/o:redhat:enterprise_linux:6
cpe:/o:redhat:enterprise_linux:7 https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:/o:redhat:enterprise_linux:7
cpe:/o:redhat:enterprise_linux:8 https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:/o:redhat:enterprise_linux:8
cpe:/o:redhat:enterprise_linux:9 https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:/o:redhat:enterprise_linux:9
CVE-2026-0966 https://access.redhat.com/security/cve/CVE-2026-0966
libssh-0-12-0-and-0-11-4-security-releases https://www.libssh.org/2026/02/10/libssh-0-12-0-and-0-11-4-security-releases/
USN-8051-1 https://usn.ubuntu.com/8051-1/
USN-8051-2 https://usn.ubuntu.com/8051-2/
No exploits are available.
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L Found at https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-0966.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: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L Found at https://access.redhat.com/security/cve/CVE-2026-0966
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: SSVCv2/E:N/A:Y/T:P/P:M/B:A/M:M/D:T/2026-03-27T19:52:22Z/ Found at https://access.redhat.com/security/cve/CVE-2026-0966
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L Found at https://bugzilla.redhat.com/show_bug.cgi?id=2433121
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: SSVCv2/E:N/A:Y/T:P/P:M/B:A/M:M/D:T/2026-03-27T19:52:22Z/ Found at https://bugzilla.redhat.com/show_bug.cgi?id=2433121
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L Found at https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
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: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L Found at https://www.libssh.org/2026/02/10/libssh-0-12-0-and-0-11-4-security-releases/
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: SSVCv2/E:N/A:Y/T:P/P:M/B:A/M:M/D:T/2026-03-27T19:52:22Z/ Found at https://www.libssh.org/2026/02/10/libssh-0-12-0-and-0-11-4-security-releases/
Exploit Prediction Scoring System (EPSS)
Percentile 0.28338
EPSS Score 0.00103
Published At April 2, 2026, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2026-04-01T13:31:30.709382+00:00 RedHat Importer Import https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-0966.json 38.0.0