Home / Vulnerabilities / CVE-2023-20109
MEDIUM SEVERITY
CVE-2023-20109 Cisco · IOS and IOS XE

Cisco IOS and IOS XE Group Encrypted Transport VPN Out-of-Bounds Write Vulnerability

Technical Severity

CVSS v3.1 Metrics

MEDIUM
6.6 / 10
Minimal Risk Critical
Vector Specification
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
Exploitation Likelihood

EPSS Prediction

0.58 %
Predictive Probability
Percentile Rank
68.2 th

Documented as more likely to be exploited than 68.2% of known CVEs.

Detection Date

Oct 10, 2023

Remediation Due

Oct 31, 2023

CISA Catalog Active

Threat Analysis

Cisco IOS and IOS XE contain an out-of-bounds write vulnerability in the Group Encrypted Transport VPN (GET VPN) feature that could allow an authenticated, remote attacker who has administrative control of either a group member or a key server to execute malicious code or cause a device to crash.

Remediation Directive

Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

External Intelligence