Security readout for executives and security teams
Plain-English summary
This CVE describes a Bluetooth handling flaw in a 2014 Audi A7 infotainment system. A specially crafted Bluetooth device name may cause the MMI services to leak memory contents or crash. The public record does not provide severity scoring, confirmed patch information, or evidence of active exploitation.
Executive priority
Treat as a targeted fleet exposure issue, not a broad enterprise emergency. Prioritize if the organization operates affected Audi A7 vehicles, especially executive, security-sensitive, or shared fleet vehicles.
Technical view
The Audi A7 MMI Bluetooth stack reportedly mishandles %x and %s format string specifiers in a Bluetooth device name. The affected item is described as Audi A7 MMI Multiplayer version N+R_CN_AU_P0395 on 2014 vehicles. Reported impacts are memory disclosure and possible service crash; no CVSS, CWE, or vendor fix is listed.
Likely exposure
Exposure appears limited to 2014 Audi A7 vehicles running the named MMI Multiplayer version with Bluetooth enabled. The sources do not establish whether other Audi models, regional firmware variants, or later MMI builds are affected.
Exploitation context
The bundle cites public researcher material, but CISA KEV is false and no cited source states active exploitation. Practical exploitation likely requires Bluetooth proximity to the vehicle; the provided evidence does not describe remote internet exposure.
Researcher notes
Evidence is sparse: the CVE text names one vehicle/MMI build and impact class, but lacks CVSS, CWE mapping, patch status, and vendor advisory details. Do not generalize affected scope beyond the cited Audi A7 MMI version without further vendor confirmation.
Mitigation direction
- Check Audi or dealer guidance for MMI firmware updates or service bulletins.
- Disable Bluetooth when not needed on potentially affected vehicles.
- Avoid pairing unknown or untrusted Bluetooth devices with affected MMI systems.
- Inventory affected vehicles and firmware versions before prioritizing remediation.
Validation and detection
- Confirm vehicle model year and exact MMI Multiplayer software version.
- Review whether Bluetooth is enabled and routinely used on affected vehicles.
- Check service records for MMI firmware updates after the vulnerable build.
- Monitor MMI behavior for unexplained Bluetooth service crashes or instability.
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.
CVE-2020-27524 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://www.youtube.com/watch?v=BQUVgAdhwQsCVE reference · x_refsource_MISC
- https://twitter.com/Kevin2600/status/1316380576593571840CVE reference · x_refsource_MISC
- https://tiger-team-1337.blogspot.com/2020/10/audi-a7-2014-mmi-mishandles-format.htmlCVE reference · x_refsource_MISC
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.