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Vulnerabilities

Vulnerability · CVE-2025-43971

An issue was discovered in GoBGP before 3.35.0.

Published Apr 21, 2025 · catalog updated Apr 21, 2025 · GoBGP GoBGP

Check if you run it

No confirmed exploitation is on record for CVE-2025-43971. EPSS is 0.55%. Act only if a listed version of GoBGP GoBGP is installed.

Gaps on this record

  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
High8.6
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.55%
Remediation
Version ranges on file
Affected products
vendor GoBGP GoBGP 0 <3.35.0

An issue was discovered in GoBGP before 3.35.0. pkg/packet/bgp/bgp.go allows attackers to cause a panic via a zero value for softwareVersionLen.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • vendor GoBGP GoBGP 0 <3.35.00 <3.35.0

How to fix CVE-2025-43971

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2025-43971. EPSS is 0.55%. Act only if a listed version of GoBGP GoBGP is installed.

Which versions are affected?

Compare what you have installed with GoBGP GoBGP 0 <3.35.0 0 <3.35.0. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS 0.55%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Apr 21, 2025 · EUVD

    Detected

    An issue was discovered in GoBGP before 3.35.0. pkg/packet/bgp/bgp.go allows attackers to cause a panic via a zero value for softwareVersionLen.

  2. Apr 21, 2025 · EUVD

    Updated

    An issue was discovered in GoBGP before 3.35.0. pkg/packet/bgp/bgp.go allows attackers to cause a panic via a zero value for softwareVersionLen.

Sources

  • CVE.orgVulnerability recordCVE-2025-43971

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2025-43971

    30-day exploitation probability 0.5%

    first.org
  • EUVDVulnerability recordEUVD-2025-12349

    An issue was discovered in GoBGP before 3.35.0. pkg/packet/bgp/bgp.go allows attackers to cause a panic via a zero value for softwareVersionLen.

    euvd.enisa.europa.eu

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.