CVE-2025-20115

CWE-120 — Classic Buffer Overflow5 documents5 sources
Severity
8.6HIGH
EPSS
1.0%
top 23.41%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
2
Cisco Cisco IOS XR SoftwareCisco IOS XR
Timeline
PublishedMar 12
Latest updateMar 14

Description

A vulnerability in confederation implementation for the Border Gateway Protocol (BGP) in Cisco IOS XR Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition. This vulnerability is due to a memory corruption that occurs when a BGP update is created with an AS_CONFED_SEQUENCE attribute that has 255 autonomous system numbers (AS numbers). An attacker could exploit this vulnerability by sending a crafted BGP update message, or the network could be desi…

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:HExploitability: 3.9 | Impact: 4.0

Affected Packages2 packages

▶CVEListV5cisco/cisco_ios_xr_software93 versions+92
▶NVDcisco/ios_xr93 versions+92

🔴Vulnerability Details

2
GHSA
GHSA-rp6p-7xx7-cr6f: A vulnerability in confederation implementation for the Border Gateway Protocol (BGP) in Cisco IOS XR Software could allow an unauthenticated, remote↗2025-03-12
▶
CVEList
Cisco IOS XR Software Border Gateway Protocol Denial of Service Vulnerability↗2025-03-12
▶

📋Vendor Advisories

1
Cisco
Cisco IOS XR Software Border Gateway Protocol Confederation Denial of Service Vulnerability↗2025-03-12
▶

🕵️Threat Intelligence

1
Bleepingcomputer
Cisco IOS XR vulnerability lets attackers crash BGP on routers↗2025-03-14
▶