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CVE-2016-1888

20
FAUCET Score

CVE-2016-1888 describes an authentication bypass vulnerability in the telnetd service of FreeBSD versions 9.3, 10.1, 10.2, 10.3, and 11.0. This flaw allows remote attackers to inject arguments into the login process through a series of memory allocation failures. With a CVSS score of 7.5 (HIGH), this vulnerability is easily exploitable over the network with low attack complexity, potentially leading to unauthorized access. There is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
9.3CPE matchmatch criteria
cpe:2.3:o:freebsd:freebsd:9.3:*:*:*:*:*:*:*
10.1CPE matchmatch criteria
cpe:2.3:o:freebsd:freebsd:10.1:*:*:*:*:*:*:*
10.2CPE matchmatch criteria
cpe:2.3:o:freebsd:freebsd:10.2:*:*:*:*:*:*:*
10.3CPE matchmatch criteria
cpe:2.3:o:freebsd:freebsd:10.3:*:*:*:*:*:*:*
11.0CPE matchmatch criteria
cpe:2.3:o:freebsd:freebsd:11.0:*:*:*:*:*:*:*

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:H/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
HIGH
Availability Impact
NONE
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
1.88%
Probability of exploitation in next 30 days
EPSS Percentile
77.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0187 is in the 60th percentile among its peer group of 51,553 CVEs.

Social Chatter

No social media mentions found for this CVE.

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-16:36.telnetd.asc
Vendor Advisory
securitytracker.com / id/1037399
Third Party AdvisoryVDB Entry