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CVE Record

CVE-2017-20005: NGINX before 1.13.6 has a buffer overflow for years that exceed four digits, as demonstrated by a file with...

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.

CriticalCVSS 9.8Not KEV-listedUpdated
Glexia's TakeAutomated analysis

Security readout for executives and security teams

Older NGINX versions could fail severely when directory listing processes files with unusual modification years. The public record rates this as critical because it is network-reachable, needs no login, and may affect confidentiality, integrity, and availability. Exposure depends on running NGINX before 1.13.6 with the autoindex module path reachable. Likely exposed systems are old NGINX deployments before 1.13.6, especially web servers or embedded products with autoindex enabled on reachable directories. Downstream distributions and vendors may have backported fixes, so package version alone may not prove vulnerability. Treat as high-priority for legacy web infrastructure. The risk is concentrated in old NGINX and autoindex usage, but the severity score justifies urgent inventory, vendor validation, and remediation of exposed services. Mitigation focus: Upgrade NGINX to a vendor-supported fixed version or later.; Apply distribution security updates, including relevant Debian LTS updates where applicable.; Check vendor advisories for embedded or appliance products bundling NGINX..

Prepared

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

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CVE-2017-20005 mapping review

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Vulnerability profileCVE Program record
Severity
Critical
CVSS
9.8 (3.1)
Known Exploited
No
Published

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

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

1CVSS vectors
0Timeline events
0ADP providers
6Source links

CVSS vector scores

1 official score

We collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.

ScoreVersionSeverityVectorExploitImpactSource
9.8CVSS 3.1CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H3.95.9Primary CVE score

Vulnerability scoring details

Base CVSS 3.1 score

9.8Critical
CVSS 3.1 vector shape for CVE-2017-20005Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

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

Attack Vector
NetworkAdjacentLocalPhysical
Attack Complexity
LowHigh
Privileges Required
NoneLowHigh
User Interaction
NoneRequired
Scope
ChangedUnchanged
Confidentiality Impact
HighLowNone
Integrity Impact
HighLowNone
Availability Impact
HighLowNone
Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
n/an/an/aListed
Weakness

CWE details

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.