CVE-2017-20005

CRITICALNVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2022-05-24. NVD baseline CVSS 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
9.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 3%CVSS: 9.8Exploit: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

NGINX before 1.13.6 has a buffer overflow for years that exceed four digits, as demonstrated by a file with a modification date in 1969 that causes an integer overflow (or a false modification date far in the future), when encountered by the autoindex module.

CVSS v3
9.8
EG Score
9.8(medium)
EG Risk
60(Track)
EG Risk 60/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity98% × 45%
Exploitation3% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
3%
EPSS %ILE
88%
KEV
Not listed

Published

June 6, 2021

Last Modified

December 5, 2025

Advisory Details (6)

Auto-updated Aug 19, 2026
Patch available. Sources: github_commit.
generic Patch Available

[SECURITY] [DLA 2680-1] nginx security update

https://lists.debian.org/debian-lts-announce/2021/06/msg00009.html
github_commit

commit b900cc28fcbb (nginx/nginx)

Fix landed in nginx/nginx commit b900cc28fcbb — awaiting tagged release

https://github.com/nginx/nginx/commit/b900cc28fcbb4cf5a32ab62f80b59292e1c85b4b
github_commit

commit 0206ebe76f74 (nginx/nginx)

Fix landed in nginx/nginx commit 0206ebe76f74 — awaiting tagged release

https://github.com/nginx/nginx/commit/0206ebe76f748bb39d9de4dd4b3fce777fdfdccf
generic
http://nginx.org/en/CHANGES
generic

#1368 (Date oveflow problems with ngx_gmtime()) – nginx

https://trac.nginx.org/nginx/ticket/1368
generic

NetApp Product Security

https://security.netapp.com/advisory/ntap-20210805-0006/

Affected Packages

(5 across 5 ecosystems)
Debian:11(1)
PackageVulnerable rangeFixed inDependents
nginx—1.13.6-1—
Debian:12(1)
PackageVulnerable rangeFixed inDependents
nginx—1.13.6-1—
Debian:13(1)
PackageVulnerable rangeFixed inDependents
nginx—1.13.6-1—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
nginx—1.13.6-1—
Debian:9(1)
PackageVulnerable rangeFixed inDependents
nginx1.10.3-1 ... 1.10.3-1+deb9u6 (9 versions)1.10.3-1+deb9u7—

Weakness Classification(2)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 5× in last 7d / 21× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 108 total refreshes for this CVE.

  1. 2026-08-25 13:44 UTCEPSS rescore
  2. 2026-08-21 23:44 UTCEPSS rescore
  3. 2026-08-20 22:51 UTCEPSS rescore
  4. 2026-08-20 02:04 UTCOSV refresh
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  23. 2026-07-23 01:28 UTCEG score recompute
  24. 2026-07-22 22:08 UTCEG score recompute
  25. 2026-07-22 14:04 UTCEPSS rescore
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  9. 2026-07-18 19:29 UTCOSV refresh
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  56. 2026-06-13 04:13 UTCOSV refresh
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  75. 2026-05-29 13:41 UTCEPSS rescore

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2017-20005?
CVE-2017-20005 is a critical vulnerability published on June 6, 2021. NGINX before 1.13.6 has a buffer overflow for years that exceed four digits, as demonstrated by a file with a modification date in 1969 that causes an integer overflow (or a false modification date far in the future), when encountered by the autoindex module.
When was CVE-2017-20005 disclosed?
CVE-2017-20005 was first published in the National Vulnerability Database on June 6, 2021, with the most recent update on December 5, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2017-20005 actively exploited?
CVE-2017-20005 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 3% probability of exploitation in the next 30 days, which ranks it in the top 12.5% of all scored CVEs.
What is the CVSS score of CVE-2017-20005?
CVE-2017-20005 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2017-20005?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2017-20005, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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