Security readout for executives and security teams
This flaw affects LilyPond’s historical safe mode. A crafted music source file could bypass the intended protection and cause code execution during file conversion. The business risk is highest where web applications or automation convert LilyPond files submitted by users. The source bundle does not show confirmed active exploitation. Exposure is most likely in systems that render or convert untrusted LilyPond .ly files, including publishing workflows, CI jobs, or web services using LilyPond for music notation. Desktop users are exposed if they open or convert hostile files. Treat this as high priority if LilyPond is exposed to user-submitted files or automated document conversion. If LilyPond is only used locally with trusted files, urgency is lower but still warrants inventory and version review. Mitigation focus: Inventory LilyPond installations and integrations that process uploaded or external .ly files.; Do not rely on -dsafe as a security boundary for untrusted LilyPond input.; Follow LilyPond and distribution vendor guidance for supported versions and package updates..
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-863: Authorization and privilege behavior lookup
Authorization weaknesses can support privilege escalation and valid-account review, depending on exploit path. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupExecution behavior lookup
The CVE wording references code or command execution, so execution technique review may help defensive triage. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2020-17354 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- High
- CVSS
- 8.6 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H1.86Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
8.6HighVector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
Source materials
- CVE List V5 sourceCVE List V5
- https://phabricator.wikimedia.org/T259210CVE reference
- https://www.mediawiki.org/wiki/Extension:Score/2021_security_advisoryCVE reference
- https://tracker.debian.org/news/1249694/accepted-lilypond-2221-1-source-into-unstable/CVE reference
- https://gitlab.com/lilypond/lilypond/-/merge_requests/1522CVE reference
- https://lilypond.org/download.htmlCVE reference
- FEDORA-2023-fb8bc496c2CVE reference · vendor-advisory
- FEDORA-2023-6edb8fab0dCVE reference · vendor-advisory
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Incorrect Authorization
Incorrect Authorization represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.