CVE-2025-20115 Details
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 designed in such a manner that the AS_CONFED_SEQUENCE attribute grows to 255 AS numbers or more. A successful exploit could allow the attacker to cause memory corruption, which may cause the BGP process to restart, resulting in a DoS condition. To exploit this vulnerability, an attacker must control a BGP confederation speaker within the same autonomous system as the victim, or the network must be designed in such a manner that the AS_CONFED_SEQUENCE attribute grows to 255 AS numbers or more.
View at NVD
Exploit prediction scoring system (EPSS) score for CVE-2025-20115
EPSS (Exploit Prediction Scoring System): EPSS predicts the likelihood that a vulnerability will be exploited in the wild. A higher percentage means a greater chance of an exploit occurring. The EPSS model produces a probability score between 0 and 1 (0 and 100%).
0.92 Probability of exploitation activity being observed over the next 30 days (75th percentile)
CVSS score for CVE-2025-20115
CVSS (Common Vulnerability Scoring System): An open framework owned and managed by FIRST.Org, Inc. that assigns a numerical score from 0 to 10 to software vulnerabilities to indicate their severity.
8.6 High
Products affected by CVE-2025-20115
IOS XR 6.6.3
IOS XR 6.7.3
IOS XR 6.8.2
IOS XR 6.9.2
IOS XR 7.10.2
DVE Score by Bitsight AI
DVE scores complement traditional static scoring systems like CVSS with Bitsight AI powered real-time threat intelligence and underground cyber criminal activity so that security teams can reduce alert fatigue and focus on vulnerabilities most likely to be exploited.
Low
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CVE-2025-20115 Global Footprint

Top 10 Identified Countries

Country Observations Percentage
ZW 179 56.83%
ZA 35 11.11%
BD 21 6.67%
CI 19 6.03%
US 15 4.76%
TZ 10 3.17%
TL 8 2.54%
IL 6 1.90%
MK 5 1.59%
IN 4 1.27%

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CVE-2025-20115 Industry Footprint

Top 10 Identified Industries

*Service provider organizations (typically Technology and Telecommunications) are disproportionally represented in the results given their upstream ownership of end-user infrastructure. See our FAQs.

Industry* Observations Percentage
Telecommunications 11 55.00%
Technology 7 35.00%
Manufacturing 1 5.00%
Utilities 1 5.00%

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