Staging Environment: Content and features may be unstable or change without notice.
Search for vulnerabilities
Vulnerability details: VCID-yu2j-f4q9-bbcx
Vulnerability ID VCID-yu2j-f4q9-bbcx
Aliases CVE-2017-20005
Summary nginx: buffer overflow in ngx_gmtime() triggered by 5 digit years
Status Published
Exploitability 0.5
Weighted Severity 8.8
Risk 4.4
Affected and Fixed Packages Package Details
Weaknesses (2)
CWE-190 Integer Overflow or Wraparound
CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer
System Score Found at
cvssv3.1 9.8 http://nginx.org/en/CHANGES
ssvc Track http://nginx.org/en/CHANGES
cvssv3 9.8 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2017-20005.json
epss 0.0325 https://api.first.org/data/v1/epss?cve=CVE-2017-20005
epss 0.0325 https://api.first.org/data/v1/epss?cve=CVE-2017-20005
epss 0.0325 https://api.first.org/data/v1/epss?cve=CVE-2017-20005
epss 0.0325 https://api.first.org/data/v1/epss?cve=CVE-2017-20005
epss 0.0325 https://api.first.org/data/v1/epss?cve=CVE-2017-20005
epss 0.0325 https://api.first.org/data/v1/epss?cve=CVE-2017-20005
epss 0.0325 https://api.first.org/data/v1/epss?cve=CVE-2017-20005
epss 0.0325 https://api.first.org/data/v1/epss?cve=CVE-2017-20005
epss 0.0325 https://api.first.org/data/v1/epss?cve=CVE-2017-20005
cvssv3.1 9.8 https://github.com/nginx/nginx/commit/0206ebe76f748bb39d9de4dd4b3fce777fdfdccf
ssvc Track https://github.com/nginx/nginx/commit/0206ebe76f748bb39d9de4dd4b3fce777fdfdccf
cvssv3.1 9.8 https://github.com/nginx/nginx/commit/b900cc28fcbb4cf5a32ab62f80b59292e1c85b4b
ssvc Track https://github.com/nginx/nginx/commit/b900cc28fcbb4cf5a32ab62f80b59292e1c85b4b
cvssv3.1 9.8 https://lists.debian.org/debian-lts-announce/2021/06/msg00009.html
ssvc Track https://lists.debian.org/debian-lts-announce/2021/06/msg00009.html
cvssv3.1 9.8 https://security.netapp.com/advisory/ntap-20210805-0006/
ssvc Track https://security.netapp.com/advisory/ntap-20210805-0006/
cvssv3.1 9.8 https://trac.nginx.org/nginx/ticket/1368
ssvc Track https://trac.nginx.org/nginx/ticket/1368
Reference id Reference type URL
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2017-20005.json
https://api.first.org/data/v1/epss?cve=CVE-2017-20005
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-20005
0206ebe76f748bb39d9de4dd4b3fce777fdfdccf https://github.com/nginx/nginx/commit/0206ebe76f748bb39d9de4dd4b3fce777fdfdccf
1368 https://trac.nginx.org/nginx/ticket/1368
1974192 https://bugzilla.redhat.com/show_bug.cgi?id=1974192
b900cc28fcbb4cf5a32ab62f80b59292e1c85b4b https://github.com/nginx/nginx/commit/b900cc28fcbb4cf5a32ab62f80b59292e1c85b4b
CHANGES http://nginx.org/en/CHANGES
msg00009.html https://lists.debian.org/debian-lts-announce/2021/06/msg00009.html
ntap-20210805-0006 https://security.netapp.com/advisory/ntap-20210805-0006/
USN-5109-1 https://usn.ubuntu.com/5109-1/
No exploits are available.
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Found at http://nginx.org/en/CHANGES
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:T/P:M/B:A/M:M/D:T/2025-12-04T13:25:48Z/ Found at http://nginx.org/en/CHANGES
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Found at https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2017-20005.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:L/PR:N/UI:N/S:U/C:H/I:H/A:H Found at https://github.com/nginx/nginx/commit/0206ebe76f748bb39d9de4dd4b3fce777fdfdccf
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:T/P:M/B:A/M:M/D:T/2025-12-04T13:25:48Z/ Found at https://github.com/nginx/nginx/commit/0206ebe76f748bb39d9de4dd4b3fce777fdfdccf
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Found at https://github.com/nginx/nginx/commit/b900cc28fcbb4cf5a32ab62f80b59292e1c85b4b
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:T/P:M/B:A/M:M/D:T/2025-12-04T13:25:48Z/ Found at https://github.com/nginx/nginx/commit/b900cc28fcbb4cf5a32ab62f80b59292e1c85b4b
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Found at https://lists.debian.org/debian-lts-announce/2021/06/msg00009.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

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: SSVCv2/E:N/A:Y/T:T/P:M/B:A/M:M/D:T/2025-12-04T13:25:48Z/ Found at https://lists.debian.org/debian-lts-announce/2021/06/msg00009.html
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Found at https://security.netapp.com/advisory/ntap-20210805-0006/
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:T/P:M/B:A/M:M/D:T/2025-12-04T13:25:48Z/ Found at https://security.netapp.com/advisory/ntap-20210805-0006/
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Found at https://trac.nginx.org/nginx/ticket/1368
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:T/P:M/B:A/M:M/D:T/2025-12-04T13:25:48Z/ Found at https://trac.nginx.org/nginx/ticket/1368
Exploit Prediction Scoring System (EPSS)
Percentile 0.87065
EPSS Score 0.0325
Published At April 1, 2026, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2026-04-01T14:28:54.433389+00:00 RedHat Importer Import https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2017-20005.json 38.0.0