HOMEVULNERABILITIESCVE-2026-42285
HIGH

CVE-2026-42285

CWE-476Published: May 7, 2026· Updated: May 11, 2026

7.5
CVSS v3.1
EPSS:0.12%probability of exploitation in 30 daysPercentile:30.9th

Official Description

GoBGP is an open source Border Gateway Protocol (BGP) implementation in the Go Programming Language. In version 4.4.0, an unauthenticated remote BGP peer can trigger a fatal panic in GoBGP by sending a specially crafted BGP UPDATE message. When the server receives a message with inconsistent attribute lengths, it improperly handles the internal state transition to a "withdraw" action, leading to a nil pointer dereference in the AdjRib.Update function. This causes the entire GoBGP process to crash, resulting in a complete loss of service availability. This issue has been patched in version 4.5.0.

NVD Source

Technical Analysis

CVE-2026-42285 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in availability disruption (denial of service), with a CVSS base score of 7.5.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityNone
IntegrityNone
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected Vendors & Products

osrg1 product
gobgp
Source: NVD CPE · 1 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

ADVISORYhttps://github.com/osrg/gobgp/security/advisories/GHSA-p3w2-64xm-833j
ADVISORYhttps://github.com/osrg/gobgp/security/advisories/GHSA-p3w2-64xm-833j

All References (3)

→
https://github.com/osrg/gobgp/releases/tag/v4.5.0Product · Release Notes
→
https://github.com/osrg/gobgp/security/advisories/GHSA-p3w2-64xm-833jExploit · Vendor Advisory
→
https://github.com/osrg/gobgp/security/advisories/GHSA-p3w2-64xm-833jExploit · Vendor Advisory

Quick Facts

CVE IDCVE-2026-42285
CVSS Score7.5 / 10
SeverityHIGH
WeaknessCWE-476
CISA KEVNo
EPSS (30d)0.12%
Affected1 vendor
PublishedMay 7, 2026

Related CVEs (CWE-476)

CVE-2026-33063
8.7
CVE-2026-28224
8.2
CVE-2026-24293
7.8
CVE-2026-31792
7.8
CVE-2026-25165
7.8
CVE-2026-4652
7.5

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2026-42285 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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CVE-2026-42285 — CVSS 7.5 HIGH | CTIWATCH.COM