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CVE-2017-20005

31
FAUCET Score

CVE-2017-20005 describes a critical buffer overflow vulnerability in NGINX versions prior to 1.13.6, specifically affecting the autoindex module when processing files with modification dates exceeding four digits, such as those from 1969 which trigger an integer overflow. This vulnerability carries a CVSS score of 9.8 (Critical), indicating a network-exploitable flaw with low attack complexity that can lead to complete compromise of confidentiality, integrity, and availability. While there is no evidence of active exploitation, nor publicly available exploit code in Metasploit or ExploitDB, the vulnerability has garnered some community discussion and limited media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
< 1.13.6CPE matchmatch criteria
cpe:2.3:a:f5:nginx:*:*:*:*:*:*:*:*
9.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.8CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
3.28%
Probability of exploitation in next 30 days
EPSS Percentile
87.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0328 is in the 79th percentile among its peer group of 36,835 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

github_advisorypatch availablevia nvd_reference
View patch

Vendor Advisories (1)

redhatCVE-2017-20005Important

nginx: buffer overflow in ngx_gmtime() triggered by 5 digit years

Sep 13, 2017

References

nginx.org / en/CHANGES
Release NotesVendor Advisory
github.com / nginx/nginx/commit/0206ebe76f748bb39d9de4dd4b3fce777fdfdccf
PatchThird Party Advisory
github.com / nginx/nginx/commit/b900cc28fcbb4cf5a32ab62f80b59292e1c85b4b
PatchThird Party Advisory
lists.debian.org / debian-lts-announce/2021/06/msg00009.html
Mailing ListThird Party Advisory
security.netapp.com / advisory/ntap-20210805-0006
Third Party Advisory
trac.nginx.org / nginx/ticket/1368
ExploitPatchVendor Advisory