Integer Overflow Vulnerability in Filecoin's Fast Finality Implementation by Filecoin Project
CVE-2025-59942

7.5HIGH

Key Information:

Vendor

Filecoin-project

Status
Go-f3
Vendor
CVE Published:
29 September 2025

What is CVE-2025-59942?

The go-f3 implementation for Filecoin experiences an integer overflow vulnerability in versions 0.8.6 and below, which leads to potential node crashes. When validating 'poison' messages, the system panics, enabling attackers to disrupt Filecoin nodes by sending crafted messages directly to them. These messages exploit flaws in signer index validation, but they do not self-propagate, requiring direct transmission from the attacker. This vulnerability is addressed in version 0.8.7, emphasizing the importance of keeping software updated to mitigate risks.

Affected Version(s)

go-f3 < 0.8.7

References

https://github.com/filecoin-project/go-f3/security/adviso...
x_refsource_CONFIRM

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

JSON
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CVE-2025-59942 : Integer Overflow Vulnerability in Filecoin's Fast Finality Implementation by Filecoin Project