CVE-2023-20109

Published Sep 27, 2023 CVSS 3.1 · 6.6 Medium EPSS 2.5% KEV · Listed
Description
A vulnerability in the Cisco Group Encrypted Transport VPN (GET VPN) feature of Cisco IOS Software and Cisco IOS XE Software could allow an authenticated, remote attacker who has administrative control of either a group member or a key server to execute arbitrary code on an affected device or cause the device to crash.

This vulnerability is due to insufficient validation of attributes in the Group Domain of Interpretation (GDOI) and G-IKEv2 protocols of the GET VPN feature. An attacker could exploit this vulnerability by either compromising an installed key server or modifying the configuration of a group member to point to a key server that is controlled by the attacker. A successful exploit could allow the attacker to execute arbitrary code and gain full control of the affected system or cause the affected system to reload, resulting in a denial of service (DoS) condition. For more information, see the Details ["#details"] section of this advisory.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
EUVD EUVD EUVD-2023-24288 A vulnerability in the Cisco Group Encrypted Transport VPN (GET VPN) feature of Cisco IOS Software and Cisco IOS XE Software could allow an authenticated, remote attacker who has administrative control of either a group member or a key server to execute arbitrary code on an affected device or cause the device to crash. This vulnerability is due to insufficient validation of attributes in the Group Domain of Interpretation (GDOI) and G-IKEv2 protocols of the GET VPN feature. An attacker could exploit this vulnerability by either compromising an installed key server or modifying the configuration of a group member to point to a key server that is controlled by the attacker. A successful exploit could allow the attacker to execute arbitrary code and gain full control of the affected system or cause the affected system to reload, resulting in a denial of service (DoS) condition. For more information, see the Details ["#details"] section of this advisory.
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'No', 'Exploitation': 'active', 'Technical Impact': 'Total'}, 'version': '2.0.3'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'active', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
CPEs cpe:2.3:o:cisco:ios:15.2\(4\)e10e:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:17.9.2b:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:3.8.10ee:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xe:17.6.5a:*:*:*:*:*:*:*
Type Values Removed Values Added
Metrics kev

{'dateAdded': '2023-10-10'}

ssvc

{'options': {'Automatable': 'No', 'Exploitation': 'active', 'Technical Impact': 'Total'}, 'version': '2.0.3'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
cisco
Published
Updated
Oct 21, 2025, 11:05 PM
Reserved
Oct 27, 2022, 6:47 PM
Status
Analyzed
Published
Sep 27, 2023, 6:15 PM
Modified
Jun 17, 2026, 5:29 AM