Search for vulnerabilities
Vulnerability details: VCID-cf9s-mwcp-tudf
Vulnerability ID VCID-cf9s-mwcp-tudf
Aliases CVE-2020-16135
Summary libssh 0.9.4 has a NULL pointer dereference in tftpserver.c if ssh_buffer_new returns NULL.
Status Published
Exploitability 0.5
Weighted Severity 5.3
Risk 2.6
Affected and Fixed Packages Package Details
Weaknesses (1)
CWE-476 NULL Pointer Dereference
System Score Found at
cvssv3 5.9 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2020-16135.json
epss 0.01964 https://api.first.org/data/v1/epss?cve=CVE-2020-16135
epss 0.01964 https://api.first.org/data/v1/epss?cve=CVE-2020-16135
epss 0.01964 https://api.first.org/data/v1/epss?cve=CVE-2020-16135
epss 0.01964 https://api.first.org/data/v1/epss?cve=CVE-2020-16135
epss 0.01964 https://api.first.org/data/v1/epss?cve=CVE-2020-16135
epss 0.01964 https://api.first.org/data/v1/epss?cve=CVE-2020-16135
epss 0.01964 https://api.first.org/data/v1/epss?cve=CVE-2020-16135
epss 0.01964 https://api.first.org/data/v1/epss?cve=CVE-2020-16135
epss 0.01964 https://api.first.org/data/v1/epss?cve=CVE-2020-16135
epss 0.01964 https://api.first.org/data/v1/epss?cve=CVE-2020-16135
epss 0.01964 https://api.first.org/data/v1/epss?cve=CVE-2020-16135
epss 0.01964 https://api.first.org/data/v1/epss?cve=CVE-2020-16135
epss 0.01964 https://api.first.org/data/v1/epss?cve=CVE-2020-16135
epss 0.01964 https://api.first.org/data/v1/epss?cve=CVE-2020-16135
epss 0.01964 https://api.first.org/data/v1/epss?cve=CVE-2020-16135
epss 0.01964 https://api.first.org/data/v1/epss?cve=CVE-2020-16135
cvssv3.1 5.9 https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
cvssv2 4.3 https://nvd.nist.gov/vuln/detail/CVE-2020-16135
cvssv3.1 5.9 https://nvd.nist.gov/vuln/detail/CVE-2020-16135
Reference id Reference type URL
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2020-16135.json
https://api.first.org/data/v1/epss?cve=CVE-2020-16135
https://bugs.libssh.org/rLIBSSHe631ebb3e2247dd25e9678e6827c20dc73b73238
https://bugs.libssh.org/T232
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-16135
https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
https://gitlab.com/libssh/libssh-mirror/-/merge_requests/120
https://lists.debian.org/debian-lts-announce/2020/07/msg00034.html
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FCIKQRKXAAB4HMWM62EPZJ4DVBHIIEG6/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JNW5GBC6JFN76VEWQXMLT5F7VCZ5AJ2E/
https://security.gentoo.org/glsa/202011-05
https://www.oracle.com/security-alerts/cpuapr2022.html
1862456 https://bugzilla.redhat.com/show_bug.cgi?id=1862456
966560 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=966560
cpe:2.3:a:libssh:libssh:0.9.4:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:libssh:libssh:0.9.4:*:*:*:*:*:*:*
cpe:2.3:a:oracle:communications_cloud_native_core_policy:1.15.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:oracle:communications_cloud_native_core_policy:1.15.0:*:*:*:*:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:esm:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:esm:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:20.04:*:*:*:lts:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:canonical:ubuntu_linux:20.04:*:*:*:lts:*:*:*
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*
CVE-2020-16135 https://nvd.nist.gov/vuln/detail/CVE-2020-16135
RHSA-2021:4387 https://access.redhat.com/errata/RHSA-2021:4387
USN-4447-1 https://usn.ubuntu.com/4447-1/
No exploits are available.
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H Found at https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2020-16135.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:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H 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: AV:N/AC:M/Au:N/C:N/I:N/A:P Found at https://nvd.nist.gov/vuln/detail/CVE-2020-16135
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:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H Found at https://nvd.nist.gov/vuln/detail/CVE-2020-16135
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 0.82744
EPSS Score 0.01964
Published At July 30, 2025, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2025-07-31T08:35:31.183023+00:00 Alpine Linux Importer Import https://secdb.alpinelinux.org/v3.9/main.json 37.0.0