LOW
CVE-2020-29443
CWE-125Published: January 26, 2021· Updated: Jun 17, 2026
3.9
CVSS v3.1
Official Description
ide_atapi_cmd_reply_end in hw/ide/atapi.c in QEMU 5.1.0 allows out-of-bounds read access because a buffer index is not validated.
Technical Analysis
CVE-2020-29443 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 ComplexityHigh
Privileges Req.High
User InteractionNone
ScopeChanged
Impact
ConfidentialityLow
IntegrityNone
AvailabilityLow
CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:L/I:N/A:L
Affected Vendors & Products
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
All References (10)
→
http://www.openwall.com/lists/oss-security/2021/01/18/2Mailing List · Patch · Third Party Advisory
→
https://lists.debian.org/debian-lts-announce/2021/02/msg00024.htmlMailing List · Third Party Advisory
→
https://lists.debian.org/debian-lts-announce/2022/09/msg00008.htmlMailing List · Third Party Advisory
→
https://lists.nongnu.org/archive/html/qemu-devel/2020-11/msg04685.htmlMailing List · Patch · Third Party Advisory
→
https://security.netapp.com/advisory/ntap-20210304-0003/Third Party Advisory
→
http://www.openwall.com/lists/oss-security/2021/01/18/2Mailing List · Patch · Third Party Advisory
→
https://lists.debian.org/debian-lts-announce/2021/02/msg00024.htmlMailing List · Third Party Advisory
→
https://lists.debian.org/debian-lts-announce/2022/09/msg00008.htmlMailing List · Third Party Advisory
→
https://lists.nongnu.org/archive/html/qemu-devel/2020-11/msg04685.htmlMailing List · Patch · Third Party Advisory
→
https://security.netapp.com/advisory/ntap-20210304-0003/Third Party Advisory
Quick Facts
CVE IDCVE-2020-29443
CVSS Score3.9 / 10
SeverityLOW
WeaknessCWE-125
CISA KEVNo
Affected2 vendor(s)
PublishedJan 26, 2021
Related CVEs (CWE-125)
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2020-29443 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.