Is CVE-2017-0902 in the CISA KEV catalog?

No. CVE-2017-0902 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2017-0902?

CVE-2017-0902 has a CVSS v3 base score of 8.1 (HIGH).

What is the EPSS score for CVE-2017-0902?

CVE-2017-0902 has an EPSS score of 4.75% (91th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2017-0902?

Upgrade rubygems on debian 11 to 3.2.0~rc.1-1 or later. Fixes are available for 8 affected products.

CVE & CISA-KEV Catalog

CVE-2017-0902

HIGHEPSS 91th pctl

8.1

CVSS v3

NVD

Description

RubyGems version 2.6.12 and earlier is vulnerable to a DNS hijacking vulnerability that allows a MITM attacker to force the RubyGems client to download and install gems from a server that the attacker controls.

CWE-350 CWE-346

How to fix

Remediation Available

rubygemsDebian

Fixed in:3.2.0~rc.1-1CVE-2017-0902

libruby1.9.1Ubuntu

Fixed in:1.9.3.484-2ubuntu1.12USN-3685-1

libruby2.0Ubuntu

Fixed in:2.0.0.484-1ubuntu2.10USN-3685-1

libruby2.3Ubuntu

Fixed in:2.3.1-2~16.04.6USN-3553-1

Fixed in:2.3.1-2~16.04.10USN-3685-1

ruby1.9.1Ubuntu

Fixed in:1.9.3.484-2ubuntu1.12USN-3685-1

ruby1.9.3Ubuntu

Fixed in:1.9.3.484-2ubuntu1.12USN-3685-1

ruby2.0Ubuntu

Fixed in:2.0.0.484-1ubuntu2.10USN-3685-1

ruby2.3Ubuntu

Fixed in:2.3.1-2~16.04.10USN-3685-1

Fixed in:2.3.1-2~16.04.6USN-3553-1

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityHigh

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Exploit Intelligence

4.75%probability of exploitation in 30 days

91stpercentile

High risk: more likely to be exploited than 91% of all known CVEs.

References

Patch2

Exploit1

hackerone.com

Third-Party Advisory11

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-05-13.