CVE-2026-5123

Exploitation

Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.

SSVC decision

• ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
• AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
• Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

0.41% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 33.9% of scored records. A rank, not a probability.

NVD base score

6.3 (CVSS v4.0), scored by the NVD independently of the CNA.

NVD CVSS 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

NVD analysis status

Analyzed. NVD last modified this record on 2026-06-17.

Red Hat severity

No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2026-03-30 15:15Z5 MO AGO

Last updated

2026-04-01 18:10Z5 MO AGO

Reserved

2026-03-30

Assigning CNA

VulDB

Record state

PUBLISHED

Severity

Medium (CVSS 6.3)

CNA CVSS 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

Weaknesses

• CWE-189
• CWE-193Off-by-one ErrorBase

Data version

5.2

Document digest

730f4845c3239de3ccc5ff57416e2f0f583f119493da7ea694381d48efa52521

• vuldb.comVDB-354155 | osrg GoBGP bgp.go DecodeFromBytes off-by-onehttps://vuldb.com/vuln/354155vdb-entrytechnical-description
• vuldb.comVDB-354155 | CTI Indicators (IOB, IOC, IOA)https://vuldb.com/vuln/354155/ctisignaturepermissions-required
• vuldb.comSubmit #780179 | osrg GoBGP 4.3.0 Off-by-one Errorhttps://vuldb.com/submit/780179third-party-advisory
• github.comhttps://github.com/osrg/gobgp/pull/3342issue-trackingpatch
• github.comhttps://github.com/osrg/gobgp/commit/67c059413470df64bc20801c46f64058e88f800fpatch
• github.comhttps://github.com/osrg/gobgp/product