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CVE-2018-17158

26
FAUCET Score

CVE-2018-17158 describes an integer overflow vulnerability in FreeBSD versions before 11.2-STABLE(r340854) and 11.2-RELEASE-p5, specifically within the NFSv4 client address length handling. This flaw allows unprivileged remote users to trigger a system crash by sending a specially crafted NFSv4 request, resulting in a high severity score of 7.5 (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H). While the vulnerability is critical, there is no evidence of active exploitation, publicly available exploit code, or significant community discussion surrounding it.

Impacted Technologies

VendorProductVersion(s)CPE
< 11.2CPE matchmatch criteria
cpe:2.3:o:freebsd:freebsd:*:*:*:*:*:*:*:*
11.2CPE matchmatch criteria
cpe:2.3:o:freebsd:freebsd:11.2:p5:*:*:*:*:*:*

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
4.41%
Probability of exploitation in next 30 days
EPSS Percentile
90.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0441 is in the 83rd 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

secuniaresearch.flexerasoftware.com / secunia_research/2018-24
Third Party Advisory
security.freebsd.org / advisories/FreeBSD-SA-18:13.nfs.asc
Third Party Advisory
securityfocus.com / bid/106192
Third Party AdvisoryVDB Entry
securitytracker.com / id/1042164
Third Party AdvisoryVDB Entry