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I. Basic Information for CVE-2026-5123
Vulnerability Information

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Vulnerability Title
osrg GoBGP bgp.go DecodeFromBytes off-by-one
Source: NVD (National Vulnerability Database)
Vulnerability 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.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L
Source: NVD (National Vulnerability Database)
Vulnerability Type
Off-by-one错误
Source: NVD (National Vulnerability Database)
Vulnerability Title
GoBGP 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
GoBGP是osrg开源的一种开源的边界网关协议(BGP)实现。 osrg GoBGP 4.3.0及之前版本存在安全漏洞,该漏洞源于对文件pkg/packet/bgp/bgp.go中参数data[1]的错误操作,可能导致差一错误。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
VendorProductAffected VersionsCPESubscribe
osrgGoBGP 4.0 -
II. Public POCs for CVE-2026-5123
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III. Intelligence Information for CVE-2026-5123
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IV. Related Vulnerabilities
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