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CVE-2025-59942

25
FAUCET Score

CVE-2025-59942 is a high-severity vulnerability affecting go-f3 versions 0.8.6 and below, a Golang implementation of Fast Finality for Filecoin. This flaw allows an attacker to crash vulnerable Filecoin nodes by sending specially crafted "poison" messages that trigger an integer overflow during signer index validation. The attack requires direct message delivery to each target, as the messages are not self-propagating. While the CVSS score is 7.5 (High) due to its network attack vector and high availability impact, there is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
< 0.8.7CPE matchmatch criteria
cpe:2.3:a:filecoin:go-f3:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.5HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.31%
Probability of exploitation in next 30 days
EPSS Percentile
23.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0031 is in the 6th percentile among its peer group of 51,551 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

gopatch availablevia ghsa
Product: github.com/filecoin-project/go-f3Fixed in: 0.8.7
github_advisoryvendor investigatingvia nvd_reference
View patch

Vendor Advisories (1)

goGHSA-g99p-47x7-mq88high

go-f3 module vulnerable to integer overflow leading to panic

Sep 29, 2025

References

github.com / filecoin-project/go-f3/security/advisories/GHSA-g99p-47x7-mq88
Vendor Advisory