CVE-2019-1664

highpriority · track · 31EPSS 0.003 · 27 %ileEURUUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

0.33% (27th) EPSS

CVSS 7.2 · high

Is it mine?

15 products

Check your exposure

Who says so?

5 sources

cnnvd · enisa_euvd · fstec_bdu · cisco_csaf

EPSS · scored 2026-10-27

A vulnerability in the hxterm service of Cisco HyperFlex Software could allow an unauthenticated, local attacker to gain root access to all nodes in the cluster. The vulnerability is due to insufficient authentication controls. An attacker could exploit this vulnerability by connecting to the hxterm service as a non-privileged, local user. A successful exploit could allow the attacker to gain root access to all member nodes of the HyperFlex cluster. This vulnerability affects Cisco HyperFlex Software Releases prior to 3.5(2a).

remediations

Vendor fix, mitigation, or workaround guidance, as published by each source.

A vendor fix is available.

FixedCisco HyperFlex HX-Seriescisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com
WorkaroundCisco HyperFlex HX-Seriescisco_csaf
A workaround for this vulnerability is available for customers who cannot upgrade to a fixed release. To coordinate implementation of the workaround, contact the Cisco Technical Assistance Center (TAC) ["https://www.cisco.com/go/tac/"].

cvss

Technical severity, 0–10. One row per scoring source.

8.1

010

base score 0–10 · higher = more severe · hover a vector to decode

v2.07.2highAV:L/AC:L/Au:N/C:C/I:C/A:Cprimary · NVD / NIST USexploitability 3.9 · impact 10

v3.17.8highCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:Hprimary · NVD / NIST USexploitability 1.8 · impact 5.9

v3.08.1highCVSS:3.0/AV:L/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:Hsecondary · ENISA EU

v3.08.1highCVSS:3.0/AV:L/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:Hsecondary · psirt@cisco.com USexploitability 1.4 · impact 6

v3.08.1highCVSS:3.0/AV:L/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:Hsecondary · Cisco PSIRT US

v3.18.1highAV:L/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:Hsecondary · FSTEC (BDU) RU

v3.17.1highCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:Usecondary · CVSS-BT (t0sche)

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Exploitation: none · Automatable: no · Technical Impact: totalcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-287USprimaryCWE-284USCWE-284US

affected products (15)

Products and version ranges known to be affected.

Cisco Cisco HyperFlex HX-Seriesall versionscisco_csafUS
Cisco Cisco HyperFlex HX-Seriesunspecified → 3.5(2a)enisa_euvdEU
Cisco Systems Inc. Cisco HyperFlex≤ 3.5(2a)fstec_bduRU
cisco hyperflex hx data platform= 2.6(1a)nvdUScpe:2.3:o:cisco:hyperflex_hx_data_platform:*:*:*:*:*:*:*:*
cisco hyperflex hx data platform= 2.6(1b)nvdUScpe:2.3:o:cisco:hyperflex_hx_data_platform:*:*:*:*:*:*:*:*
cisco hyperflex hx data platform= 2.6(1d)nvdUScpe:2.3:o:cisco:hyperflex_hx_data_platform:*:*:*:*:*:*:*:*
cisco hyperflex hx data platform= 2.6(1e)nvdUScpe:2.3:o:cisco:hyperflex_hx_data_platform:*:*:*:*:*:*:*:*
cisco hyperflex hx data platform= 3.0(1a)nvdUScpe:2.3:o:cisco:hyperflex_hx_data_platform:*:*:*:*:*:*:*:*
cisco hyperflex hx data platform= 3.0(1b)nvdUScpe:2.3:o:cisco:hyperflex_hx_data_platform:*:*:*:*:*:*:*:*
cisco hyperflex hx data platform= 3.0(1c)nvdUScpe:2.3:o:cisco:hyperflex_hx_data_platform:*:*:*:*:*:*:*:*
cisco hyperflex hx data platform= 3.0(1d)nvdUScpe:2.3:o:cisco:hyperflex_hx_data_platform:*:*:*:*:*:*:*:*
cisco hyperflex hx data platform= 3.0(1e)nvdUScpe:2.3:o:cisco:hyperflex_hx_data_platform:*:*:*:*:*:*:*:*
cisco hyperflex hx data platform= 3.0(1h)nvdUScpe:2.3:o:cisco:hyperflex_hx_data_platform:*:*:*:*:*:*:*:*
cisco hyperflex hx data platform= 3.0(1i)nvdUScpe:2.3:o:cisco:hyperflex_hx_data_platform:*:*:*:*:*:*:*:*
cisco hyperflex hx data platform= 3.5(1a)nvdUScpe:2.3:o:cisco:hyperflex_hx_data_platform:*:*:*:*:*:*:*:*

advisories (1)

Vendor and ecosystem advisories describing this.

cisco-sa-20190220-chn-root-accessCisco HyperFlex Software Unauthenticated Root Access Vulnerability2019-02-20csaf · cisco_csafUS
A vulnerability in the hxterm service of Cisco HyperFlex Software could allow an unauthenticated, local attacker to gain root access to all nodes in the cluster. The vulnerability is due to insufficient authentication controls. An attacker could exploit this vulnerability by connecting to the hxterm service as a non-privileged, local user. A successful exploit could allow the attacker to gain root access to all member nodes of the HyperFlex cluster. Cisco has released software updates that address this vulnerability. There are workarounds that address this vulnerability. This advisory is available at the following link: https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190220-chn-root-access ["https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190220-chn-root-access"]

also known as (4)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu cisco_csaf nvd NVD CVE.org MITRE

published 2019-02-21modified 2026-06-17

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references (16)

External citations — patches, advisories, analysis.

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