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Vulnerability details: VCID-5jpw-599j-yudq
Vulnerability ID VCID-5jpw-599j-yudq
Aliases CVE-2017-20002
Summary The Debian shadow package before 1:4.5-1 for Shadow incorrectly lists pts/0 and pts/1 as physical terminals in /etc/securetty. This allows local users to login as password-less users even if they are connected by non-physical means such as SSH (hence bypassing PAM's nullok_secure configuration). This notably affects environments such as virtual machines automatically generated with a default blank root password, allowing all local users to escalate privileges.
Status Published
Exploitability 0.5
Weighted Severity 7.0
Risk 3.5
Affected and Fixed Packages Package Details
Weaknesses (1)
CWE-269 Improper Privilege Management
System Score Found at
epss 0.00059 https://api.first.org/data/v1/epss?cve=CVE-2017-20002
epss 0.00059 https://api.first.org/data/v1/epss?cve=CVE-2017-20002
epss 0.00059 https://api.first.org/data/v1/epss?cve=CVE-2017-20002
epss 0.00059 https://api.first.org/data/v1/epss?cve=CVE-2017-20002
epss 0.00059 https://api.first.org/data/v1/epss?cve=CVE-2017-20002
epss 0.00059 https://api.first.org/data/v1/epss?cve=CVE-2017-20002
epss 0.00059 https://api.first.org/data/v1/epss?cve=CVE-2017-20002
epss 0.00059 https://api.first.org/data/v1/epss?cve=CVE-2017-20002
epss 0.00059 https://api.first.org/data/v1/epss?cve=CVE-2017-20002
epss 0.00059 https://api.first.org/data/v1/epss?cve=CVE-2017-20002
epss 0.00059 https://api.first.org/data/v1/epss?cve=CVE-2017-20002
epss 0.00059 https://api.first.org/data/v1/epss?cve=CVE-2017-20002
epss 0.00059 https://api.first.org/data/v1/epss?cve=CVE-2017-20002
epss 0.00059 https://api.first.org/data/v1/epss?cve=CVE-2017-20002
epss 0.00059 https://api.first.org/data/v1/epss?cve=CVE-2017-20002
epss 0.00059 https://api.first.org/data/v1/epss?cve=CVE-2017-20002
epss 0.00059 https://api.first.org/data/v1/epss?cve=CVE-2017-20002
epss 0.00059 https://api.first.org/data/v1/epss?cve=CVE-2017-20002
epss 0.00059 https://api.first.org/data/v1/epss?cve=CVE-2017-20002
epss 0.00059 https://api.first.org/data/v1/epss?cve=CVE-2017-20002
epss 0.00059 https://api.first.org/data/v1/epss?cve=CVE-2017-20002
epss 0.00059 https://api.first.org/data/v1/epss?cve=CVE-2017-20002
epss 0.00059 https://api.first.org/data/v1/epss?cve=CVE-2017-20002
epss 0.00059 https://api.first.org/data/v1/epss?cve=CVE-2017-20002
epss 0.00059 https://api.first.org/data/v1/epss?cve=CVE-2017-20002
epss 0.00059 https://api.first.org/data/v1/epss?cve=CVE-2017-20002
epss 0.00059 https://api.first.org/data/v1/epss?cve=CVE-2017-20002
cvssv2 4.6 https://nvd.nist.gov/vuln/detail/CVE-2017-20002
cvssv3.1 7.8 https://nvd.nist.gov/vuln/detail/CVE-2017-20002
Reference id Reference type URL
https://api.first.org/data/v1/epss?cve=CVE-2017-20002
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=877374
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=914957
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-20002
https://lists.debian.org/debian-lts-announce/2021/03/msg00020.html
cpe:2.3:a:debian:shadow:4.4:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:debian:shadow:4.4:*:*:*:*:*:*:*
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:*:*:*:*:*:*:*
CVE-2017-20002 https://nvd.nist.gov/vuln/detail/CVE-2017-20002
No exploits are available.
Vector: AV:L/AC:L/Au:N/C:P/I:P/A:P Found at https://nvd.nist.gov/vuln/detail/CVE-2017-20002
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-2017-20002
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 0.18828
EPSS Score 0.00059
Published At Sept. 13, 2025, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2025-07-31T10:16:42.131391+00:00 NVD Importer Import https://nvd.nist.gov/vuln/detail/CVE-2017-20002 37.0.0