HOMEVULNERABILITIESCVE-2020-25723
LOW

CVE-2020-25723

CWE-617Published: December 2, 2020· Updated: Jun 17, 2026

3.2
CVSS v3.1

Official Description

A reachable assertion issue was found in the USB EHCI emulation code of QEMU. It could occur while processing USB requests due to missing handling of DMA memory map failure. A malicious privileged user within the guest may abuse this flaw to send bogus USB requests and crash the QEMU process on the host, resulting in a denial of service.

NVD Source

Technical Analysis

CVE-2020-25723 requires local access, meaning attackers must already have a foothold on the target system.

Exploitation requires high privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

The vulnerability has a "Changed" scope, meaning successful exploitation can impact components beyond the vulnerable component itself — such as the host operating system or adjacent services.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorLocal
Attack ComplexityLow
Privileges Req.High
User InteractionNone
ScopeChanged
Impact
ConfidentialityNone
IntegrityNone
AvailabilityLow
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:L

Affected Vendors & Products

Debian1 product(s)
debian linux
qemu1 product(s)
qemu
Source: NVD CPE · 2 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

PATCHhttp://www.openwall.com/lists/oss-security/2020/12/22/1
PATCHhttps://bugzilla.redhat.com/show_bug.cgi?id=1898579
PATCHhttp://www.openwall.com/lists/oss-security/2020/12/22/1
PATCHhttps://bugzilla.redhat.com/show_bug.cgi?id=1898579
ADVISORYhttps://lists.debian.org/debian-lts-announce/2022/09/msg00008.html
ADVISORYhttps://security.netapp.com/advisory/ntap-20201218-0004/
ADVISORYhttps://lists.debian.org/debian-lts-announce/2022/09/msg00008.html
ADVISORYhttps://security.netapp.com/advisory/ntap-20201218-0004/

All References (8)

→
http://www.openwall.com/lists/oss-security/2020/12/22/1Mailing List · Patch · Third Party Advisory
→
https://bugzilla.redhat.com/show_bug.cgi?id=1898579Issue Tracking · Patch · Third Party Advisory
→
https://lists.debian.org/debian-lts-announce/2022/09/msg00008.htmlMailing List · Third Party Advisory
→
https://security.netapp.com/advisory/ntap-20201218-0004/Third Party Advisory
→
http://www.openwall.com/lists/oss-security/2020/12/22/1Mailing List · Patch · Third Party Advisory
→
https://bugzilla.redhat.com/show_bug.cgi?id=1898579Issue Tracking · Patch · Third Party Advisory
→
https://lists.debian.org/debian-lts-announce/2022/09/msg00008.htmlMailing List · Third Party Advisory
→
https://security.netapp.com/advisory/ntap-20201218-0004/Third Party Advisory

Quick Facts

CVE IDCVE-2020-25723
CVSS Score3.2 / 10
SeverityLOW
WeaknessCWE-617
CISA KEVNo
Affected2 vendor(s)
PublishedDec 2, 2020

Related CVEs (CWE-617)

CVE-2020-3615
9.8
CVE-2019-9795
9.8
CVE-2020-12417
8.8
CVE-2020-6617
8.8
CVE-2020-6623
8.8
CVE-2020-6619
8.8

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2020-25723 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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