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CVE-2020-17469

24
FAUCET Score

CVE-2020-17469 is a Denial-of-Service (DoS) vulnerability affecting FNET versions up to 4.6.4, specifically within its IPv6 fragment reassembly functionality. An uninitialized pointer dereference occurs when processing fragmented IPv6 packets, leading to system instability. This vulnerability carries a CVSS v3.1 score of 7.5 (High), indicating it can be exploited remotely with low attack complexity and no user interaction, resulting in a complete loss of availability. There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= 4.6.4CPE matchmatch criteria
cpe:2.3:a:butok:fnet:*:*:*:*:*:*:*:*

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
2.96%
Probability of exploitation in next 30 days
EPSS Percentile
85.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0296 is in the 75th 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

Remediation records are not available for this CVE.

References

fnet.sourceforge.net / manual/fnet_history.html
Release NotesThird Party Advisory
us-cert.cisa.gov / ics/advisories/icsa-20-343-01
Third Party AdvisoryUS Government Resource
kb.cert.org / vuls/id/815128
Third Party AdvisoryUS Government Resource