HOMEVULNERABILITIESCVE-2023-1386
HIGH

CVE-2023-1386

CWE-281Published: July 24, 2023· Updated: Jun 17, 2026

7.8
CVSS v3.1

Official Description

A flaw was found in the 9p passthrough filesystem (9pfs) implementation in QEMU. When a local user in the guest writes an executable file with SUID or SGID, none of these privileged bits are correctly dropped. As a result, in rare circumstances, this flaw could be used by malicious users in the guest to elevate their privileges within the guest and help a host local user to elevate privileges on the host.

NVD Source

Technical Analysis

CVE-2023-1386 requires local access, meaning attackers must already have a foothold on the target system.

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

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 7.8.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorLocal
Attack ComplexityLow
Privileges Req.Low
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected Vendors & Products

Fedora1 product(s)
fedora
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

ADVISORYhttps://access.redhat.com/security/cve/CVE-2023-1386
ADVISORYhttps://bugzilla.redhat.com/show_bug.cgi?id=2223985
ADVISORYhttps://access.redhat.com/security/cve/CVE-2023-1386
ADVISORYhttps://bugzilla.redhat.com/show_bug.cgi?id=2223985

All References (10)

→
https://access.redhat.com/security/cve/CVE-2023-1386Third Party Advisory
→
https://bugzilla.redhat.com/show_bug.cgi?id=2223985Issue Tracking · Third Party Advisory
→
https://github.com/advisories/GHSA-ppj8-867g-rgjr
→
https://github.com/v9fs/linux/issues/29
→
https://security.netapp.com/advisory/ntap-20230831-0005/
→
https://access.redhat.com/security/cve/CVE-2023-1386Third Party Advisory
→
https://bugzilla.redhat.com/show_bug.cgi?id=2223985Issue Tracking · Third Party Advisory
→
https://github.com/advisories/GHSA-ppj8-867g-rgjr
→
https://github.com/v9fs/linux/issues/29
→
https://security.netapp.com/advisory/ntap-20230831-0005/

Quick Facts

CVE IDCVE-2023-1386
CVSS Score7.8 / 10
SeverityHIGH
WeaknessCWE-281
CISA KEVNo
Affected2 vendor(s)
PublishedJul 24, 2023

Related CVEs (CWE-281)

CVE-2024-36532
10.0
CVE-2021-29971
9.8
CVE-2023-28668
9.8
CVE-2020-18890
9.8
CVE-2023-47463
9.8
CVE-2024-41644
9.8

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2023-1386 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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