CVE-2019-12648

highpriority · track · 36OT risk · elevatedEPSS 0.024 · 84 %ileEURUUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

2.35% (84th) EPSS

CVSS 9 · high

Is it mine?

38 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · fstec_bdu · cisco_csaf

EPSS · scored 2026-10-27

A vulnerability in the IOx application environment for Cisco IOS Software could allow an authenticated, remote attacker to gain unauthorized access to the Guest Operating System (Guest OS) running on an affected device. The vulnerability is due to incorrect role-based access control (RBAC) evaluation when a low-privileged user requests access to a Guest OS that should be restricted to administrative accounts. An attacker could exploit this vulnerability by authenticating to the Guest OS by using the low-privileged-user credentials. An exploit could allow the attacker to gain unauthorized access to the Guest OS as a root user.

remediations

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

A vendor fix is available.

Fixed15.1(3)SVR1cisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com
Fixed15.1(3)SVR10cisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com
Fixed15.1(3)SVR2cisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com
Fixed15.1(3)SVR3cisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com
Fixed15.1(3)SVScisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com
Fixed15.1(3)SVS1cisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com
Fixed15.1(3)SVT1cisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com
Fixed15.1(3)SVT2cisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com
Fixed15.1(3)SVT3cisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com
Fixed15.1(3)SVT4cisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com
Fixed15.1(3)SVU1cisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com
Fixed15.1(3)SVU10cisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com
Fixed15.1(3)SVU11cisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com
Fixed15.1(3)SVU2cisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com
Fixed15.1(3)SVU20cisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com
Fixed15.1(3)SVU21cisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com
Fixed15.1(3)SVV1cisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com
Fixed15.1(3)SVV2cisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com
Fixed15.1(3)SVV3cisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com
Fixed15.1(3)SVV4cisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com
Fixed15.1(3)SVWcisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com
Fixed15.1(3)SVW1cisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com
Fixed15.1(3)SVXcisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com
Fixed15.1(3)SVX1cisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com
Fixed15.7(3)Mcisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com
Fixed15.7(3)M1cisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com
Fixed15.7(3)M2cisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com
Fixed15.7(3)M3cisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com
Fixed15.7(3)M4cisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com
Fixed15.7(3)M4acisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com
Fixed15.7(3)M4bcisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com
Fixed15.8(3)Mcisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com
Fixed15.8(3)M0acisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com
Fixed15.8(3)M1cisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com

cvss

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

9.9

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · high–critical · 8.1–9.9

v2.09highAV:N/AC:L/Au:S/C:C/I:C/A:Cprimary · NVD / NIST USexploitability 8 · impact 10

v3.18.8highCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:Hprimary · NVD / NIST USexploitability 2.8 · impact 5.9

v3.09.9criticalCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:Hsecondary · ENISA EU

v3.09.9criticalCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:Hsecondary · psirt@cisco.com USexploitability 3.1 · impact 6

v3.09.9criticalCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:Hsecondary · Cisco PSIRT US

v3.19.9criticalAV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:Hsecondary · FSTEC (BDU) RU

v3.18.1highCVSS:3.1/AV:N/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-863USprimaryCWE-284USCWE-284US

affected products (38)

Products and version ranges known to be affected.

Cisco 15.1(3)SVR1all versionscisco_csafUS
Cisco 15.1(3)SVR10all versionscisco_csafUS
Cisco 15.1(3)SVR2all versionscisco_csafUS
Cisco 15.1(3)SVR3all versionscisco_csafUS
Cisco 15.1(3)SVSall versionscisco_csafUS
Cisco 15.1(3)SVS1all versionscisco_csafUS
Cisco 15.1(3)SVT1all versionscisco_csafUS
Cisco 15.1(3)SVT2all versionscisco_csafUS
Cisco 15.1(3)SVT3all versionscisco_csafUS
Cisco 15.1(3)SVT4all versionscisco_csafUS
Cisco 15.1(3)SVU1all versionscisco_csafUS
Cisco 15.1(3)SVU10all versionscisco_csafUS
Cisco 15.1(3)SVU11all versionscisco_csafUS
Cisco 15.1(3)SVU2all versionscisco_csafUS
Cisco 15.1(3)SVU20all versionscisco_csafUS
Cisco 15.1(3)SVU21all versionscisco_csafUS
Cisco 15.1(3)SVV1all versionscisco_csafUS
Cisco 15.1(3)SVV2all versionscisco_csafUS
Cisco 15.1(3)SVV3all versionscisco_csafUS
Cisco 15.1(3)SVV4all versionscisco_csafUS

showing 20 of 38

advisories (1)

Vendor and ecosystem advisories describing this.

cisco-sa-20190925-ios-gos-authCisco IOx for IOS Software Guest Operating System Unauthorized Access Vulnerability2019-09-25csaf · cisco_csafUS
A vulnerability in the IOx application environment for Cisco IOS Software could allow an authenticated, remote attacker to gain unauthorized access to the Guest Operating System (Guest OS) running on an affected device. The vulnerability is due to incorrect role-based access control (RBAC) evaluation when a low-privileged user requests access to a Guest OS that should be restricted to administrative accounts. An attacker could exploit this vulnerability by authenticating to the Guest OS by using the low-privileged-user credentials. An exploit could allow the attacker to gain unauthorized access to the Guest OS as a root user. Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability. This advisory is available at the following link: https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190925-ios-gos-auth ["https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190925-ios-gos-auth"] This advisory is part of the September 25, 2019, release of the Cisco IOS and IOS XE Software Security Advisory Bundled Publication, which includes 12 Cisco Security Advisories that describe 13 vulnerabilities. For a complete list of the advisories and links to them, see Cisco Event Response: September 2019 Semiannual Cisco IOS and IOS XE Software Security Advisory Bundled Publication ["https://sec.cloudapps.cisco.com/security/center/viewErp.x?alertId=ERP-72547"].

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 CVE.org MITRE

published 2019-09-25modified 2026-06-17

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+5004 more

references (7)

External citations — patches, advisories, analysis.

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