EUVD-2026-17109CVSS Vector
CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Lifecycle Timeline
4Description
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.
Analysis
Denial of service in osrg GoBGP up to version 4.3.0 via off-by-one error in the DecodeFromBytes function allows remote, unauthenticated attackers to crash the BGP daemon through manipulation of packet data, resulting in availability impact. The vulnerability requires high attack complexity and has difficult exploitability; no public exploit code or active exploitation is currently confirmed, though a patch is available from the vendor.
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Priority Score
Vendor Status
Debian
| Release | Status | Fixed Version | Urgency |
|---|---|---|---|
| bullseye | vulnerable | 2.25.0-2 | - |
| bookworm | vulnerable | 3.10.0-1 | - |
| trixie | vulnerable | 3.36.0-2 | - |
| forky, sid | vulnerable | 4.3.0-1 | - |
| (unstable) | fixed | (unfixed) | - |
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External POC / Exploit Code
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