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CVE-2016-2090

26
FAUCET Score

CVE-2016-2090 is an off-by-one heap-based buffer overflow vulnerability in the fgetwln function of libbsd, affecting canonical, debian, fedoraproject, and freedesktop products. It carries a critical CVSS score of 9.8, indicating a severe risk with network-based attacks, low attack complexity, and high impact on confidentiality, integrity, and availability. Despite its high severity, 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
24CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:24:*:*:*:*:*:*:*
25CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:25:*:*:*:*:*:*:*
< 0.8.2CPE matchmatch criteria
cpe:2.3:a:freedesktop:libbsd:*:*:*:*:*:*:*:*
8.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
12.04CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:esm:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.8CRITICAL

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
3.18%
Probability of exploitation in next 30 days
EPSS Percentile
86.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0318 is in the 78th percentile among its peer group of 36,835 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

blog.fuzzing-project.org / 36-Heap-buffer-overflow-in-fgetwln-function-of-libbsd.html
Third Party Advisory
bugs.freedesktop.org / show_bug.cgi
Issue TrackingThird Party Advisory
cgit.freedesktop.org / libbsd/commit
Issue TrackingPatchThird Party Advisory
lists.debian.org / debian-lts-announce/2019/12/msg00036.html
Third Party Advisory
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/7KJE5SPSX7HEKLZ34LUTZLXWPEL2K353
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/DIQKQ42Z7553D46QY3IMIQKS52QTNIHY
security.gentoo.org / glsa/201607-13
Third Party Advisory
usn.ubuntu.com / 4243-1
Third Party Advisory
openwall.com / lists/oss-security/2016/01/28/5
Mailing ListThird Party Advisory