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CVE-2018-11440

29
FAUCET Score

CVE-2018-11440 describes a stack-based buffer overflow in the parseChars function of Liblouis 3.5.0, impacting various distributions including Canonical Ubuntu and openSUSE Leap. With a CVSS score of 8.8 (High), this vulnerability is remotely exploitable with low attack complexity, potentially leading to complete compromise of confidentiality, integrity, and availability if a user is tricked into interacting with a malicious input. There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
3.5.0CPE matchmatch criteria
cpe:2.3:a:liblouis:liblouis:3.5.0:*:*:*:*:*:*:*
14.04CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*
16.04CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*
17.10CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:17.10:*:*:*:*:*:*:*
18.04CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*

CVSS Data

CVSS version used by this source: 3.0

8.8HIGH

CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
5.9
CvssVersion
3.0

Exploit Intelligence

EPSS Score
3.24%
Probability of exploitation in next 30 days
EPSS Percentile
87.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0324 is in the 86th percentile among its peer group of 14,848 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 Mastodon, and 0.2 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 0.1 Security Researcher mentions.

Remediation

Vendor Patches (1)

redhatvendor investigatingvia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: liblouis

Vendor Advisories (1)

redhatCVE-2018-11440Low

liblouis: Stack-based Buffer Overflow in parseChars function in compileTranslationTable.c

May 25, 2018

References

lists.opensuse.org / opensuse-security-announce/2019-04/msg00038.html
Third Party Advisory
github.com / liblouis/liblouis/issues/575
Issue TrackingThird Party Advisory
usn.ubuntu.com / 3669-1
Third Party Advisory
securityfocus.com / bid/104321
Third Party AdvisoryVDB Entry