Vulnerability · Published Jun 3, 2026 · Assigned by mitre
CVE-2026-37462
High 7.5
In plain English
A high-severity integer overflow in the gobgp package (Debian). There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 20% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)7.5High
Exploit odds (30 days)0.3%top 79.6% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
An integer underflow in the BGPUpdate.DecodeFromBytes 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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | gobgp | no fix listed | DEBIAN-CVE-2026-37462 |
| Debian:13 | gobgp | no fix listed | DEBIAN-CVE-2026-37462 |
| Debian:14 | gobgp | 4.4.0-1 | DEBIAN-CVE-2026-37462 |
| Go | github.com/osrg/gobgp/v4 | 4.4.0 | GHSA-pw7p-7fqv-hpj8 |
| Go | github.com/osrg/gobgp/v4 | 4.4.0 | GO-2026-5971 |
| Ubuntu:25.10 | gobgp | no fix listed | UBUNTU-CVE-2026-37462 |
| Ubuntu:26.10 | gobgp | no fix listed | UBUNTU-CVE-2026-37462 |
Affected products (as reported)
Weakness: CWE-190 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H