CVE-2026-5123

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.

CVSS v3 3.7 LOW
CVSS v2.0 2.6 LOW

3.7^/10

CVSS v3 : LOW

Vector :

Exploitability : 2.2 / Impact : 1.4

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact LOW

Scope UNCHANGED

2.6^/10

CVSS v2.0 : LOW

Vector : AV:N/AC:H/Au:N/C:N/I:N/A:P

Exploitability : 4.9 / Impact : 2.9

Access Vector NETWORK

Access Complexity HIGH

Authentication NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact PARTIAL

References

Link	Resource
https://github.com/osrg/gobgp/
https://github.com/osrg/gobgp/commit/67c059413470df64bc20801c46f64058e88f800f
https://github.com/osrg/gobgp/pull/3342
https://vuldb.com/submit/780179
https://vuldb.com/vuln/354155
https://vuldb.com/vuln/354155/cti

Configurations

No configuration.

History

30 Mar 2026, 16:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-03-30 16:16

Updated : 2026-03-30 16:16

NVD link : CVE-2026-5123

Mitre link : CVE-2026-5123

CVE.ORG link : CVE-2026-5123

JSON object : View

Products Affected

No product.

CWE

CWE-189

Numeric Errors

CWE-193

Off-by-one Error

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