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CVE Record

CVE-2020-25624: hw/usb/hcd-ohci.c in QEMU 5.0.0 has a stack-based buffer over-read via values obtained from the host contro...

hw/usb/hcd-ohci.c in QEMU 5.0.0 has a stack-based buffer over-read via values obtained from the host controller driver.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysisunknown

Security readout for executives and security teams

Plain-English summary

CVE-2020-25624 is a QEMU 5.0.0 issue in OHCI USB controller handling. The public description says QEMU could read past a stack buffer using values from the host controller driver. Business urgency depends on where QEMU is used and whether USB/OHCI emulation is exposed.

Executive priority

Set priority after asset discovery. This is not KEV-listed in the bundle and has no CVSS here, but QEMU can sit in sensitive virtualization paths, so unresolved exposure deserves timely validation.

Technical view

The CVE identifies a stack-based buffer over-read in QEMU's hw/usb/hcd-ohci.c. The source bundle does not provide CVSS, CWE, confirmed impact, or complete affected-product metadata. Debian and NetApp advisories indicate downstream vendor tracking or updates, but exact fixed versions are not included in the bundle.

Likely exposure

Likely exposure is environments running QEMU 5.0.0 or downstream products bundling vulnerable QEMU code, especially where OHCI USB controller emulation is enabled. The bundle does not list CPEs or a full affected-version range.

Exploitation context

The source bundle does not show CISA KEV listing or cited active exploitation. It also does not include exploit maturity, required privileges, attack path, or confirmed impact. Treat exploitation status as unconfirmed.

Researcher notes

Evidence is sparse. The core fact is a stack-based over-read in QEMU 5.0.0 OHCI USB handling. Avoid assuming guest escape, code execution, or information disclosure without reviewing the upstream patch and vendor advisories.

Mitigation direction

  • Inventory QEMU deployments and downstream appliances using bundled QEMU components.
  • Check QEMU, Debian, NetApp, and platform vendor advisories for fixed package versions.
  • Apply vendor-supported QEMU security updates where applicable.
  • Disable unnecessary USB/OHCI emulation where operationally safe and vendor-supported.
  • Prioritize internet-facing or multi-tenant virtualization environments for review.

Validation and detection

  • Confirm installed QEMU versions and package provenance across hosts and appliances.
  • Identify virtual machines configured with OHCI or USB controller emulation.
  • Review vendor advisory status for each affected platform or distribution.
  • Check whether Debian LTS or vendor security updates have been applied.
  • Document compensating controls when upgrades are deferred.
Prepared
Confidence
medium
Sources
5

Public sources used

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

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

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CVE-2020-25624 mapping review

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Vulnerability profileCVE Program record
Severity
Unknown
CVSS
Not scored
Known Exploited
No
Published
Official CVE source material

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.

0CVSS vectors
0Timeline events
0ADP providers
4Source links

CVSS and timeline data

No CVSS vectors or timeline events were available in the normalized CVE source material.

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
n/an/an/aListed
Weakness

CWE details

No CWE listed

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.