CVE-2026-37461

EUVD-2026-26999
An out-of-bounds read in the ParseIP6Extended function (/bgp/bgp.go) of gobgp v4.3.0 allows attackers to cause a Denial of Service (DoS) via supplying a crafted BGP UPDATE message.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
7.5 HIGH
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Base Score
CVSS 3.x
EPSS Score
Percentile: 26%
Affected Products (NVD)
VendorProductVersion
osrggobgp
4.3.0
𝑥
= Vulnerable software versions
Debian logo
Debian Releases
Debian Product
Codename
gobgp
bookworm
postponed
bullseye
postponed
forky
4.7.0-1
fixed
sid
4.7.0-1
fixed
trixie
no-dsa
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
gobgp
bionic
Fixed 1.29-1ubuntu0.1+esm2
released
focal
Fixed 2.12.0-1ubuntu0.1~esm3
released
jammy
Fixed 2.25.0-3ubuntu0.1+esm4
released
noble
Fixed 3.23.0-1ubuntu0.3+esm4
released
questing
ignored
resolute
Fixed 3.36.0-2ubuntu0.1~esm1
released
Common Weakness Enumeration
References
https://github.com/osrg/gobgp/blob/v4.3.0/pkg/packet/bgp/bgp.go
https://github.com/osrg/gobgp/commit/362cce3e325f56e7a4f792ccb9689b3bdda9e682
https://github.com/osrg/gobgp/commit/9ce8936672ebc07df524da77fa4c6ae26d92be6d