CVE-2023-46565Public exploitNetwork attack vector

Routing daemon crash via nil pointer dereference

Published Apr 29, 2024 · Updated Sep 6, 2024

Buffer overflow in GoBGP 419c50dfac578daa4d11256904d0dc182f1a9b22 allows remote attackers to crash the routing daemon via BGP. The upstream reproducer reaches handlingError after BGP UPDATE and withdrawal messages, where a nil pointer dereference raises SIGSEGV. Reachability requires an established BGP peering session; the result is process termination and routing service interruption.

CVSS severity7.5
High
EPSS probability0.74%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Buffer overflow in GoBGP 419c50dfac578daa4d11256904d0dc182f1a9b22 allows remote attackers to crash the routing daemon via BGP. The upstream reproducer reaches handlingError after BGP UPDATE and withdrawal messages, where a nil pointer dereference raises SIGSEGV. Reachability requires an established BGP peering session; the result is process termination and routing service interruption.

The record

CVE
CVE-2023-46565
Published
Apr 29, 2024
Updated
Sep 6, 2024
Vendor
GoBGP
Product
GoBGP
Classifications
CWE-120, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 29, 2024CVE publishedPublication date reported by the CVE source.
  2. Sep 6, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=419c50dfac578daa4d11256904d0dc182f1a9b22

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

GoBGP · GoBGPversion=419c50dfac578daa4d11256904d0dc182f1a9b22

Published CVSS scores

7.5CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-120Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
T1499.004Application or System Exploitation

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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