Security readout for executives and security teams
Plain-English summary
CVE-2021-30145 is a user-assisted code execution flaw in mpv through 0.33.0. An attacker would need a user to open a crafted M3U playlist. Organizations using mpv should treat this as meaningful endpoint risk, especially where users handle media or playlist files from external sources.
Executive priority
Prioritize remediation where mpv is deployed on user-facing endpoints or automated media workflows. The issue is not KEV-listed, but code execution potential justifies timely patching.
Technical view
The CVE describes a format string vulnerability in mpv through 0.33.0 reachable via a crafted M3U playlist file. Public sources reference the mpv 0.33.1 release, an upstream commit, and a Gentoo advisory, but the bundle provides no CVSS vector or detailed affected package matrix.
Likely exposure
Exposure is most likely on desktops, workstations, kiosks, or media-processing systems with mpv installed and allowed to open playlist files from untrusted sources.
Exploitation context
The bundle supports user-assisted remote attack potential, not confirmed active exploitation. CISA KEV is false, and no cited source in the bundle states in-the-wild exploitation.
Researcher notes
Evidence is concise: CVE text identifies format string code execution through crafted M3U playlists, with upstream release and commit references. The bundle lacks CVSS, CWE, exploit maturity, and complete vendor package details.
Mitigation direction
- Upgrade mpv beyond 0.33.0 using vendor or distribution packages.
- Consult mpv and distribution advisories for exact fixed versions.
- Restrict opening M3U playlists from untrusted email, web, chat, or file shares.
- Prioritize endpoints where mpv is associated with playlist file types.
Validation and detection
- Inventory systems with mpv installed and record package versions.
- Flag mpv versions through 0.33.0 for remediation review.
- Check whether mpv handles M3U files by default on managed endpoints.
- Review endpoint telemetry for unusual mpv crashes or suspicious child processes.
Public sources used
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.
Execution 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-2021-30145 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
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
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 and timeline data
No CVSS vectors or timeline events were available in the normalized CVE source material.
Source materials
- CVE List V5 sourceCVE List V5
- https://mpv.io/CVE reference · x_refsource_MISC
- https://github.com/mpv-player/mpv/releases/tag/v0.33.1CVE reference · x_refsource_MISC
- https://devel0pment.de/?p=2217CVE reference · x_refsource_MISC
- https://github.com/mpv-player/mpv/commit/d0c530919d8cd4d7a774e38ab064e0fabdae34e6CVE reference · x_refsource_MISC
- GLSA-202107-46CVE reference · vendor-advisory, x_refsource_GENTOO
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.