Exploited Vulnerabilities DailyCVE-2023-20109: Cisco IOS and IOS XE
EPSS2.4%No. 1556 of 1739 in KEV
CVE year2023listed the same year
Same vendor in KEV100
Same product4
| Field | Value |
|---|---|
| Vendor | Cisco |
| Product | IOS and IOS XE |
| Name | Cisco IOS and IOS XE Group Encrypted Transport VPN Out-of-Bounds Write Vulnerability |
| Added to KEV | 2023-10-10 |
| US federal due date | 2023-10-31 |
| Ransomware use | Unknown |
| CWE | CWE-787 |
CISA description
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.
Other entries for this product
| CVE | Vendor / product | Added | EPSS | Ransomware |
|---|---|---|---|---|
| CVE-2025-20352 | Cisco IOS and IOS XE | 2025-09-29 | 39.4% | Unknown |
| CVE-2017-3881 | Cisco IOS and IOS XE | 2022-03-25 | 98.9% | Unknown |
| CVE-2018-0171 | Cisco IOS and IOS XE | 2021-11-03 | 99.4% | Unknown |
Data from CISA's Known Exploited Vulnerabilities (KEV) catalog. EPSS is FIRST's estimated probability of exploitation activity in the next 30 days, refreshed weekly. Always follow the vendor's official guidance.
About this page
A Cisco IOS and IOS XE vulnerability added to CISA's Known Exploited Vulnerabilities catalog on 2023-10-10.