CVE-2026-5123
Low
Description
A weakness has been identified in osrg GoBGP up to 4.3.0. This impacts the function DecodeFromBytes of the file pkg/packet/bgp/bgp.go. Executing a manipulation of the argument data[1] can lead to off-by-one. The attack may be launched remotely. Attacks of this nature are highly complex. The exploitability is said to be difficult. This patch is called 67c059413470df64bc20801c46f64058e88f800f. A patch should be applied to remediate this issue.
SeverityLow
CVSS3.7
Exploit probability—
ProductOsrg Gobgp
PublishedMar 30, 2026
First seenMar 30, 2026
Weakness typeCWE-193CWE-193CWE-189CWE-189
How to fix
Update
- osrg gobgp4.4.0 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| osrg gobgp | v < 4.4.0 | 4.4.0 |
Check your version
Choose the product and enter the version you run to see whether it falls in the affected range.
In the Intelligence 360 plan
Attack Surface Management
See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.