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CVE-2019-20367

29
FAUCET Score

CVE-2019-20367 is an out-of-bounds read vulnerability in the nlist.c component of libbsd versions prior to 0.10.0, affecting products from vendors like Canonical, Debian, and openSUSE. This critical vulnerability (CVSS 9.1) allows unauthenticated attackers to remotely achieve high confidentiality and availability impacts with low attack complexity. Despite its severity, there is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 0.10.0CPE matchmatch criteria
cpe:2.3:a:freedesktop:libbsd:*:*:*:*:*:*:*:*
9.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
12.04CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:-:*:*:*
14.04CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:esm:*:*:*
16.04CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.1CRITICAL

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.2
CvssVersion
3.1

Exploit Intelligence

EPSS Score
2.80%
Probability of exploitation in next 30 days
EPSS Percentile
85.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0280 is in the 76th percentile among its peer group of 36,833 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

lists.opensuse.org / opensuse-security-announce/2020-05/msg00043.html
Mailing ListThird Party Advisory
gitlab.freedesktop.org / libbsd/libbsd/commit/9d917aad37778a9f4a96ba358415f077f3f36f3b
ExploitVendor Advisory
lists.apache.org / thread.html/r0e913668380f59bcbd14fdd8ae8d24f95f99995e290cd18a7822c6e5%40%3Cdev.tomee.apache.org%3E
lists.apache.org / thread.html/ra781e51cf1ec40381c98cddc073b3576fb56c3978f4564d2fa431550%40%3Cdev.tomee.apache.org%3E
lists.debian.org / debian-lts-announce/2021/02/msg00027.html
Mailing ListThird Party Advisory
lists.freedesktop.org / archives/libbsd/2019-August/000229.html
Mailing ListRelease NotesVendor Advisory
usn.ubuntu.com / 4243-1
Third Party Advisory