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CVE-2018-6923

26
FAUCET Score

CVE-2018-6923 is a Denial of Service (DoS) vulnerability affecting FreeBSD versions prior to 11.1-STABLE, 11.2-RELEASE-p2, and 11.1-RELEASE-p13. A remote attacker can exploit a flaw in the IP fragment reassembly code to cause excessive system resource consumption. This vulnerability has a CVSS v3 score of 7.5 (High), indicating a network-based attack with low complexity and high availability impact. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
2.2CPE matchmatch criteria
cpe:2.3:o:freebsd:freebsd:2.2:*:*:*:*:*:*:*
3.0CPE matchmatch criteria
cpe:2.3:o:freebsd:freebsd:3.0:*:*:*:*:*:*:*
4.3CPE matchmatch criteria
cpe:2.3:o:freebsd:freebsd:4.3:*:*:*:*:*:*:*
4.4CPE matchmatch criteria
cpe:2.3:o:freebsd:freebsd:4.4:*:*:*:*:*:*:*
4.5CPE matchmatch criteria
cpe:2.3:o:freebsd:freebsd:4.5:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

7.5HIGH

CVSS:3.0/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
3.0

Exploit Intelligence

EPSS Score
4.01%
Probability of exploitation in next 30 days
EPSS Percentile
89.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0401 is in the 81st 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

freebsd.org / security/advisories/FreeBSD-SA-18:10.ip.asc
MitigationVendor Advisory
securityfocus.com / bid/105336
Third Party AdvisoryVDB Entry
securitytracker.com / id/1041505
Third Party AdvisoryVDB Entry