What’s Vulnerable › Vulnerabilities

CVE-2025-43972

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.6% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-04-21 · updated 2026-06-17
• Weakness: CWE-1284

Description

An issue was discovered in GoBGP before 3.35.0. An attacker can cause a crash in the pkg/packet/bgp/bgp.go flowspec parser by sending fewer than 20 bytes in a certain context.

Affected products

• osrg GoBGP: before 3.35.0 — fixed in 3.35.0

How to fix

Upgrade to a fixed version: osrg GoBGP 3.35.0. Check the vendor advisory for mitigations.

References

• https://github.com/osrg/gobgp/commit/ca7383f450f7b296c5389feceef2467de5ab6e5a
• https://github.com/osrg/gobgp/compare/v3.34.0...v3.35.0

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