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CVE-2020-17354

27
FAUCET Score

CVE-2020-17354 describes a bypass in LilyPond versions prior to 2.24, allowing attackers to circumvent the -dsafe protection mechanism. This vulnerability, rated 8.6 HIGH, enables arbitrary code execution through dangerous Scheme code embedded in .ly files during file format conversion, with an attack vector requiring user interaction (UI:R) and local access (AV:L). While no active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion has been observed, the high CVSS score indicates a severe potential impact if exploited.

Impacted Technologies

VendorProductVersion(s)CPE
< 2.24.0CPE matchmatch criteria
cpe:2.3:a:lilypond:lilypond:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

8.6HIGH

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

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
6.0
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.41%
Probability of exploitation in next 30 days
EPSS Percentile
33.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0041 is in the 33rd percentile among its peer group of 11,617 CVEs.

Social Chatter

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

Remediation

Remediation records are not available for this CVE.

References

lilypond.org / doc/v2.18/Documentation/usage/command_002dline-usage
Release Notes
gitlab.com / lilypond/lilypond/-/merge_requests/1522
PatchVendor Advisory
lilypond.org / download.html
Product
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/K43PF6VGFJNNGAPY57BW3VMEFFOSMRLF
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/ST5BLLQ4GDME3SN7UE5OMNE5GZE66X4Y
phabricator.wikimedia.org / T259210
ExploitThird Party Advisory
tracker.debian.org / news/1249694/accepted-lilypond-2221-1-source-into-unstable
Mailing ListRelease NotesThird Party Advisory
mediawiki.org / wiki/Extension:Score/2021_security_advisory
Third Party Advisory