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Vulnerability details: VCID-vrgz-eguk-k3dy
Vulnerability ID VCID-vrgz-eguk-k3dy
Aliases CVE-2018-20685
Summary Multiple vulnerabilities have been found in Dropbear, the worst of which could result in a Denial of Service condition.
Status Published
Exploitability 0.5
Weighted Severity 8.0
Risk 4.0
Affected and Fixed Packages Package Details
Weaknesses (1)
CWE-20 Improper Input Validation
System Score Found at
cvssv3.1 5.3 https://access.redhat.com/errata/RHSA-2019:3702
ssvc Track https://access.redhat.com/errata/RHSA-2019:3702
cvssv3 5.3 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2018-20685.json
epss 0.03377 https://api.first.org/data/v1/epss?cve=CVE-2018-20685
epss 0.03377 https://api.first.org/data/v1/epss?cve=CVE-2018-20685
epss 0.03377 https://api.first.org/data/v1/epss?cve=CVE-2018-20685
epss 0.03377 https://api.first.org/data/v1/epss?cve=CVE-2018-20685
epss 0.03377 https://api.first.org/data/v1/epss?cve=CVE-2018-20685
epss 0.03377 https://api.first.org/data/v1/epss?cve=CVE-2018-20685
epss 0.03377 https://api.first.org/data/v1/epss?cve=CVE-2018-20685
epss 0.03377 https://api.first.org/data/v1/epss?cve=CVE-2018-20685
cvssv3.1 5.3 https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf
ssvc Track https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf
cvssv3.1 5.3 https://cvsweb.openbsd.org/cgi-bin/cvsweb/src/usr.bin/ssh/scp.c.diff?r1=1.197&r2=1.198&f=h
ssvc Track https://cvsweb.openbsd.org/cgi-bin/cvsweb/src/usr.bin/ssh/scp.c.diff?r1=1.197&r2=1.198&f=h
cvssv3 7.3 https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
cvssv3.1 5.3 https://github.com/openssh/openssh-portable/commit/6010c0303a422a9c5fa8860c061bf7105eb7f8b2
ssvc Track https://github.com/openssh/openssh-portable/commit/6010c0303a422a9c5fa8860c061bf7105eb7f8b2
cvssv3.1 5.3 https://lists.debian.org/debian-lts-announce/2019/03/msg00030.html
ssvc Track https://lists.debian.org/debian-lts-announce/2019/03/msg00030.html
archlinux High https://security.archlinux.org/AVG-951
cvssv3.1 5.3 https://security.gentoo.org/glsa/201903-16
ssvc Track https://security.gentoo.org/glsa/201903-16
cvssv3.1 5.3 https://security.gentoo.org/glsa/202007-53
ssvc Track https://security.gentoo.org/glsa/202007-53
cvssv3.1 5.3 https://security.netapp.com/advisory/ntap-20190215-0001/
ssvc Track https://security.netapp.com/advisory/ntap-20190215-0001/
cvssv3.1 5.3 https://sintonen.fi/advisories/scp-client-multiple-vulnerabilities.txt
ssvc Track https://sintonen.fi/advisories/scp-client-multiple-vulnerabilities.txt
cvssv3.1 5.3 https://usn.ubuntu.com/3885-1/
ssvc Track https://usn.ubuntu.com/3885-1/
cvssv3.1 5.3 https://www.debian.org/security/2019/dsa-4387
ssvc Track https://www.debian.org/security/2019/dsa-4387
cvssv3.1 5.3 https://www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.html
ssvc Track https://www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.html
cvssv3.1 5.3 https://www.oracle.com/technetwork/security-advisory/cpuoct2019-5072832.html
ssvc Track https://www.oracle.com/technetwork/security-advisory/cpuoct2019-5072832.html
cvssv3.1 5.3 http://www.securityfocus.com/bid/106531
ssvc Track http://www.securityfocus.com/bid/106531
Reference id Reference type URL
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2018-20685.json
https://api.first.org/data/v1/epss?cve=CVE-2018-20685
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-20685
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-6109
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-6111
https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
106531 http://www.securityfocus.com/bid/106531
1665785 https://bugzilla.redhat.com/show_bug.cgi?id=1665785
6010c0303a422a9c5fa8860c061bf7105eb7f8b2 https://github.com/openssh/openssh-portable/commit/6010c0303a422a9c5fa8860c061bf7105eb7f8b2
919101 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=919101
ASA-201904-11 https://security.archlinux.org/ASA-201904-11
AVG-951 https://security.archlinux.org/AVG-951
dsa-4387 https://www.debian.org/security/2019/dsa-4387
GLSA-201903-16 https://security.gentoo.org/glsa/201903-16
GLSA-202007-53 https://security.gentoo.org/glsa/202007-53
msg00030.html https://lists.debian.org/debian-lts-announce/2019/03/msg00030.html
ntap-20190215-0001 https://security.netapp.com/advisory/ntap-20190215-0001/
RHSA-2019:3702 https://access.redhat.com/errata/RHSA-2019:3702
scp.c.diff?r1=1.197&r2=1.198&f=h https://cvsweb.openbsd.org/cgi-bin/cvsweb/src/usr.bin/ssh/scp.c.diff?r1=1.197&r2=1.198&f=h
USN-3885-1 https://usn.ubuntu.com/3885-1/
No exploits are available.
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:N Found at https://access.redhat.com/errata/RHSA-2019:3702
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

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Vector: SSVCv2/E:N/A:N/T:P/P:M/B:A/M:M/D:T/2025-12-17T21:53:24Z/ Found at https://access.redhat.com/errata/RHSA-2019:3702
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N Found at https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2018-20685.json
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

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Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:N Found at https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

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Vector: SSVCv2/E:N/A:N/T:P/P:M/B:A/M:M/D:T/2025-12-17T21:53:24Z/ Found at https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:N Found at https://cvsweb.openbsd.org/cgi-bin/cvsweb/src/usr.bin/ssh/scp.c.diff?r1=1.197&r2=1.198&f=h
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

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Vector: SSVCv2/E:N/A:N/T:P/P:M/B:A/M:M/D:T/2025-12-17T21:53:24Z/ Found at https://cvsweb.openbsd.org/cgi-bin/cvsweb/src/usr.bin/ssh/scp.c.diff?r1=1.197&r2=1.198&f=h
Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:H/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)

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Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:N Found at https://github.com/openssh/openssh-portable/commit/6010c0303a422a9c5fa8860c061bf7105eb7f8b2
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

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Vector: SSVCv2/E:N/A:N/T:P/P:M/B:A/M:M/D:T/2025-12-17T21:53:24Z/ Found at https://github.com/openssh/openssh-portable/commit/6010c0303a422a9c5fa8860c061bf7105eb7f8b2
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:N Found at https://lists.debian.org/debian-lts-announce/2019/03/msg00030.html
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

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Vector: SSVCv2/E:N/A:N/T:P/P:M/B:A/M:M/D:T/2025-12-17T21:53:24Z/ Found at https://lists.debian.org/debian-lts-announce/2019/03/msg00030.html
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:N Found at https://security.gentoo.org/glsa/201903-16
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

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Vector: SSVCv2/E:N/A:N/T:P/P:M/B:A/M:M/D:T/2025-12-17T21:53:24Z/ Found at https://security.gentoo.org/glsa/201903-16
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:N Found at https://security.gentoo.org/glsa/202007-53
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

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Vector: SSVCv2/E:N/A:N/T:P/P:M/B:A/M:M/D:T/2025-12-17T21:53:24Z/ Found at https://security.gentoo.org/glsa/202007-53
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:N Found at https://security.netapp.com/advisory/ntap-20190215-0001/
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

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physical

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Vector: SSVCv2/E:N/A:N/T:P/P:M/B:A/M:M/D:T/2025-12-17T21:53:24Z/ Found at https://security.netapp.com/advisory/ntap-20190215-0001/
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:N Found at https://sintonen.fi/advisories/scp-client-multiple-vulnerabilities.txt
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

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unchanged

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Vector: SSVCv2/E:N/A:N/T:P/P:M/B:A/M:M/D:T/2025-12-17T21:53:24Z/ Found at https://sintonen.fi/advisories/scp-client-multiple-vulnerabilities.txt
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:N Found at https://usn.ubuntu.com/3885-1/
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

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required

unchanged

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Vector: SSVCv2/E:N/A:N/T:P/P:M/B:A/M:M/D:T/2025-12-17T21:53:24Z/ Found at https://usn.ubuntu.com/3885-1/
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:N Found at https://www.debian.org/security/2019/dsa-4387
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

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none

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Vector: SSVCv2/E:N/A:N/T:P/P:M/B:A/M:M/D:T/2025-12-17T21:53:24Z/ Found at https://www.debian.org/security/2019/dsa-4387
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:N Found at https://www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.html
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

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Vector: SSVCv2/E:N/A:N/T:P/P:M/B:A/M:M/D:T/2025-12-17T21:53:24Z/ Found at https://www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.html
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:N Found at https://www.oracle.com/technetwork/security-advisory/cpuoct2019-5072832.html
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

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Vector: SSVCv2/E:N/A:N/T:P/P:M/B:A/M:M/D:T/2025-12-17T21:53:24Z/ Found at https://www.oracle.com/technetwork/security-advisory/cpuoct2019-5072832.html
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:N Found at http://www.securityfocus.com/bid/106531
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

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Vector: SSVCv2/E:N/A:N/T:P/P:M/B:A/M:M/D:T/2025-12-17T21:53:24Z/ Found at http://www.securityfocus.com/bid/106531
Exploit Prediction Scoring System (EPSS)
Percentile 0.87327
EPSS Score 0.03377
Published At April 1, 2026, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2026-04-01T13:02:49.413955+00:00 Gentoo Importer Import https://security.gentoo.org/glsa/202007-53 38.0.0