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Vulnerabilities

Vulnerable Software

Vulnerability Details CVE-2025-20115

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.

Exploit prediction scoring system (EPSS) score

EPSS Score 0.002

EPSS Ranking 40.4%

CVSS Severity

CVSS v3 Score 8.6

References

Products affected by CVE-2025-20115

Cisco » Ios Xr » Version: 24.1.1

cpe:2.3:o:cisco:ios_xr:24.1.1
Cisco » Ios Xr » Version: 24.1.2

cpe:2.3:o:cisco:ios_xr:24.1.2
Cisco » Ios Xr » Version: 24.2.1

cpe:2.3:o:cisco:ios_xr:24.2.1
Cisco » Ios Xr » Version: 24.2.11

cpe:2.3:o:cisco:ios_xr:24.2.11
Cisco » Ios Xr » Version: 24.2.2

cpe:2.3:o:cisco:ios_xr:24.2.2
Cisco » Ios Xr » Version: 24.2.20

cpe:2.3:o:cisco:ios_xr:24.2.20
Cisco » Ios Xr » Version: 6.5.1

cpe:2.3:o:cisco:ios_xr:6.5.1
Cisco » Ios Xr » Version: 6.5.15

cpe:2.3:o:cisco:ios_xr:6.5.15
Cisco » Ios Xr » Version: 6.5.2

cpe:2.3:o:cisco:ios_xr:6.5.2
Cisco » Ios Xr » Version: 6.5.25

cpe:2.3:o:cisco:ios_xr:6.5.25
Cisco » Ios Xr » Version: 6.5.26

cpe:2.3:o:cisco:ios_xr:6.5.26
Cisco » Ios Xr » Version: 6.5.28

cpe:2.3:o:cisco:ios_xr:6.5.28
Cisco » Ios Xr » Version: 6.5.29

cpe:2.3:o:cisco:ios_xr:6.5.29
Cisco » Ios Xr » Version: 6.5.3

cpe:2.3:o:cisco:ios_xr:6.5.3
Cisco » Ios Xr » Version: 6.5.31

cpe:2.3:o:cisco:ios_xr:6.5.31
Cisco » Ios Xr » Version: 6.5.32

cpe:2.3:o:cisco:ios_xr:6.5.32
Cisco » Ios Xr » Version: 6.5.33

cpe:2.3:o:cisco:ios_xr:6.5.33
Cisco » Ios Xr » Version: 6.5.35

cpe:2.3:o:cisco:ios_xr:6.5.35
Cisco » Ios Xr » Version: 6.5.90

cpe:2.3:o:cisco:ios_xr:6.5.90
Cisco » Ios Xr » Version: 6.5.92

cpe:2.3:o:cisco:ios_xr:6.5.92
Cisco » Ios Xr » Version: 6.5.93

cpe:2.3:o:cisco:ios_xr:6.5.93
Cisco » Ios Xr » Version: 6.6.1

cpe:2.3:o:cisco:ios_xr:6.6.1
Cisco » Ios Xr » Version: 6.6.11

cpe:2.3:o:cisco:ios_xr:6.6.11
Cisco » Ios Xr » Version: 6.6.12

cpe:2.3:o:cisco:ios_xr:6.6.12
Cisco » Ios Xr » Version: 6.6.2

cpe:2.3:o:cisco:ios_xr:6.6.2
Cisco » Ios Xr » Version: 6.6.25

cpe:2.3:o:cisco:ios_xr:6.6.25
Cisco » Ios Xr » Version: 6.6.3

cpe:2.3:o:cisco:ios_xr:6.6.3
Cisco » Ios Xr » Version: 6.6.4

cpe:2.3:o:cisco:ios_xr:6.6.4
Cisco » Ios Xr » Version: 6.7.1

cpe:2.3:o:cisco:ios_xr:6.7.1
Cisco » Ios Xr » Version: 6.7.2

cpe:2.3:o:cisco:ios_xr:6.7.2
Cisco » Ios Xr » Version: 6.7.3

cpe:2.3:o:cisco:ios_xr:6.7.3
Cisco » Ios Xr » Version: 6.7.35

cpe:2.3:o:cisco:ios_xr:6.7.35
Cisco » Ios Xr » Version: 6.7.4

cpe:2.3:o:cisco:ios_xr:6.7.4
Cisco » Ios Xr » Version: 6.8.1

cpe:2.3:o:cisco:ios_xr:6.8.1
Cisco » Ios Xr » Version: 6.8.2

cpe:2.3:o:cisco:ios_xr:6.8.2
Cisco » Ios Xr » Version: 6.9.1

cpe:2.3:o:cisco:ios_xr:6.9.1
Cisco » Ios Xr » Version: 6.9.2

cpe:2.3:o:cisco:ios_xr:6.9.2
Cisco » Ios Xr » Version: 7.0.0

cpe:2.3:o:cisco:ios_xr:7.0.0
Cisco » Ios Xr » Version: 7.0.1

cpe:2.3:o:cisco:ios_xr:7.0.1
Cisco » Ios Xr » Version: 7.0.11

cpe:2.3:o:cisco:ios_xr:7.0.11
Cisco » Ios Xr » Version: 7.0.12

cpe:2.3:o:cisco:ios_xr:7.0.12
Cisco » Ios Xr » Version: 7.0.14

cpe:2.3:o:cisco:ios_xr:7.0.14
Cisco » Ios Xr » Version: 7.0.2

cpe:2.3:o:cisco:ios_xr:7.0.2
Cisco » Ios Xr » Version: 7.0.90

cpe:2.3:o:cisco:ios_xr:7.0.90
Cisco » Ios Xr » Version: 7.1.1

cpe:2.3:o:cisco:ios_xr:7.1.1
Cisco » Ios Xr » Version: 7.1.15

cpe:2.3:o:cisco:ios_xr:7.1.15
Cisco » Ios Xr » Version: 7.1.2

cpe:2.3:o:cisco:ios_xr:7.1.2
Cisco » Ios Xr » Version: 7.1.25

cpe:2.3:o:cisco:ios_xr:7.1.25
Cisco » Ios Xr » Version: 7.1.3

cpe:2.3:o:cisco:ios_xr:7.1.3
Cisco » Ios Xr » Version: 7.10.1

cpe:2.3:o:cisco:ios_xr:7.10.1
Cisco » Ios Xr » Version: 7.10.2

cpe:2.3:o:cisco:ios_xr:7.10.2
Cisco » Ios Xr » Version: 7.11.1

cpe:2.3:o:cisco:ios_xr:7.11.1
Cisco » Ios Xr » Version: 7.11.2

cpe:2.3:o:cisco:ios_xr:7.11.2
Cisco » Ios Xr » Version: 7.11.21

cpe:2.3:o:cisco:ios_xr:7.11.21
Cisco » Ios Xr » Version: 7.2.0

cpe:2.3:o:cisco:ios_xr:7.2.0
Cisco » Ios Xr » Version: 7.2.1

cpe:2.3:o:cisco:ios_xr:7.2.1
Cisco » Ios Xr » Version: 7.2.12

cpe:2.3:o:cisco:ios_xr:7.2.12
Cisco » Ios Xr » Version: 7.2.2

cpe:2.3:o:cisco:ios_xr:7.2.2
Cisco » Ios Xr » Version: 7.3.1

cpe:2.3:o:cisco:ios_xr:7.3.1
Cisco » Ios Xr » Version: 7.3.15

cpe:2.3:o:cisco:ios_xr:7.3.15
Cisco » Ios Xr » Version: 7.3.16

cpe:2.3:o:cisco:ios_xr:7.3.16
Cisco » Ios Xr » Version: 7.3.2

cpe:2.3:o:cisco:ios_xr:7.3.2
Cisco » Ios Xr » Version: 7.3.27

cpe:2.3:o:cisco:ios_xr:7.3.27
Cisco » Ios Xr » Version: 7.3.3

cpe:2.3:o:cisco:ios_xr:7.3.3
Cisco » Ios Xr » Version: 7.3.4

cpe:2.3:o:cisco:ios_xr:7.3.4
Cisco » Ios Xr » Version: 7.3.5

cpe:2.3:o:cisco:ios_xr:7.3.5
Cisco » Ios Xr » Version: 7.3.6

cpe:2.3:o:cisco:ios_xr:7.3.6
Cisco » Ios Xr » Version: 7.4.1

cpe:2.3:o:cisco:ios_xr:7.4.1
Cisco » Ios Xr » Version: 7.4.15

cpe:2.3:o:cisco:ios_xr:7.4.15
Cisco » Ios Xr » Version: 7.4.16

cpe:2.3:o:cisco:ios_xr:7.4.16
Cisco » Ios Xr » Version: 7.4.2

cpe:2.3:o:cisco:ios_xr:7.4.2
Cisco » Ios Xr » Version: 7.5.1

cpe:2.3:o:cisco:ios_xr:7.5.1
Cisco » Ios Xr » Version: 7.5.12

cpe:2.3:o:cisco:ios_xr:7.5.12
Cisco » Ios Xr » Version: 7.5.2

cpe:2.3:o:cisco:ios_xr:7.5.2
Cisco » Ios Xr » Version: 7.5.3

cpe:2.3:o:cisco:ios_xr:7.5.3
Cisco » Ios Xr » Version: 7.5.4

cpe:2.3:o:cisco:ios_xr:7.5.4
Cisco » Ios Xr » Version: 7.5.5

cpe:2.3:o:cisco:ios_xr:7.5.5
Cisco » Ios Xr » Version: 7.5.52

cpe:2.3:o:cisco:ios_xr:7.5.52
Cisco » Ios Xr » Version: 7.6.1

cpe:2.3:o:cisco:ios_xr:7.6.1
Cisco » Ios Xr » Version: 7.6.15

cpe:2.3:o:cisco:ios_xr:7.6.15
Cisco » Ios Xr » Version: 7.6.2

cpe:2.3:o:cisco:ios_xr:7.6.2
Cisco » Ios Xr » Version: 7.6.3

cpe:2.3:o:cisco:ios_xr:7.6.3
Cisco » Ios Xr » Version: 7.7.1

cpe:2.3:o:cisco:ios_xr:7.7.1
Cisco » Ios Xr » Version: 7.7.2

cpe:2.3:o:cisco:ios_xr:7.7.2
Cisco » Ios Xr » Version: 7.7.21

cpe:2.3:o:cisco:ios_xr:7.7.21
Cisco » Ios Xr » Version: 7.8.1

cpe:2.3:o:cisco:ios_xr:7.8.1
Cisco » Ios Xr » Version: 7.8.12

cpe:2.3:o:cisco:ios_xr:7.8.12
Cisco » Ios Xr » Version: 7.8.2

cpe:2.3:o:cisco:ios_xr:7.8.2
Cisco » Ios Xr » Version: 7.8.22

cpe:2.3:o:cisco:ios_xr:7.8.22
Cisco » Ios Xr » Version: 7.8.23

cpe:2.3:o:cisco:ios_xr:7.8.23
Cisco » Ios Xr » Version: 7.9.1

cpe:2.3:o:cisco:ios_xr:7.9.1
Cisco » Ios Xr » Version: 7.9.2

cpe:2.3:o:cisco:ios_xr:7.9.2
Cisco » Ios Xr » Version: 7.9.21

cpe:2.3:o:cisco:ios_xr:7.9.21

Vulnerabilities

Vulnerable Software

Vulnerability Details CVE-2025-20115

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