Skip to main content
CRITICAL

CVE-2017-20005

CVSS v3

9.8

CRITICAL

EPSS Score

3.3 %

exploit probability, as of 2026-10-19

CISA KEV

No

known exploited

Exploitation

—

SSVC status

Get an alert for each new CVE published for nginx.

Set up CVE WatchFree account · no credit card

Affected and fixed versions

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Vendor advisories

  • CVE-2017-20005 Red Hat Product Security

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

Full record on NVD

Description

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.

Technical details

Published
2021-06-06

Frequently asked questions

What is CVE-2017-20005?

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.

Is CVE-2017-20005 actively exploited?

Active exploitation of CVE-2017-20005 has not been confirmed. Its EPSS score was 3.3% on 2026-10-19, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2017-20005?

CVE-2017-20005 has a CVSS v3 base score of 9.8 (CRITICAL severity).

Running nginx? Hear about its next vulnerability

CVE Watch matches each new CVE to the vendors and products you list (vendor and product, not the version) and puts it in your alerts with its KEV and EPSS status.

Already have an account? Open CVE WatchNo credit card required · No monthly cap on website lookups · 250 API requests/month