CVE-2026-37459
Published:May 04, 2026
Updated:May 16, 2026
An integer underflow in FRRouting (FRR) stable/10.0 to stable/10.6 allows attackers to cause a Denial of Service (DoS) via supplying a crafted BGP UPDATE message.
Affected Packages
https://github.com/FRRouting/frr.git (GITHUB):
Affected version(s) >=frr-10.0 <frr-10.0.5Fix Suggestion:
Update to version frr-10.0.5https://github.com/FRRouting/frr.git (GITHUB):
Affected version(s) >=frr-10.3 <frr-10.3.4Fix Suggestion:
Update to version frr-10.3.4https://github.com/FRRouting/frr.git (GITHUB):
Affected version(s) >=frr-10.5.0 <frr-10.5.3Fix Suggestion:
Update to version frr-10.5.3https://github.com/FRRouting/frr.git (GITHUB):
Affected version(s) >=frr-10.1 <frr-10.1.5Fix Suggestion:
Update to version frr-10.1.5https://github.com/FRRouting/frr.git (GITHUB):
Affected version(s) >=frr-10.2 <frr-10.2.6Fix Suggestion:
Update to version frr-10.2.6https://github.com/FRRouting/frr.git (GITHUB):
Affected version(s) >=frr-10.4.0 <frr-10.4.4Fix Suggestion:
Update to version frr-10.4.4https://github.com/FRRouting/frr.git (GITHUB):
Affected version(s) =frr-10.6.0 <frr-10.6.1Fix Suggestion:
Update to version frr-10.6.1Related Resources (1)
Do you need more information?
Contact UsCVSS v4
Base Score:
8.7
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
NONE
Vulnerable System Integrity
NONE
Vulnerable System Availability
HIGH
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
7.5
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Weakness Type (CWE)
Uncontrolled Resource Consumption
EPSS
Base Score:
0.05