HOMEVULNERABILITIESCVE-2023-5088
HIGH

CVE-2023-5088

CWE-821Published: November 3, 2023· Updated: Jun 17, 2026

7.0
CVSS v3.1

Official Description

A bug in QEMU could cause a guest I/O operation otherwise addressed to an arbitrary disk offset to be targeted to offset 0 instead (potentially overwriting the VM's boot code). This could be used, for example, by L2 guests with a virtual disk (vdiskL2) stored on a virtual disk of an L1 (vdiskL1) hypervisor to read and/or write data to LBA 0 of vdiskL1, potentially gaining control of L1 at its next reboot.

NVD Source

Technical Analysis

CVE-2023-5088 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 7.0.

CVSS v3.1 Vector Breakdown

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

Affected Vendors & Products

qemu1 product(s)
qemu
Red Hat1 product(s)
enterprise linux
Source: NVD CPE · 3 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

PATCHhttps://bugzilla.redhat.com/show_bug.cgi?id=2247283
PATCHhttps://lore.kernel.org/all/[email protected]/T/
PATCHhttps://bugzilla.redhat.com/show_bug.cgi?id=2247283
PATCHhttps://lore.kernel.org/all/[email protected]/T/
ADVISORYhttps://access.redhat.com/security/cve/CVE-2023-5088
ADVISORYhttps://access.redhat.com/security/cve/CVE-2023-5088

All References (13)

→
https://access.redhat.com/errata/RHSA-2024:2135
→
https://access.redhat.com/errata/RHSA-2024:2962
→
https://access.redhat.com/security/cve/CVE-2023-5088Third Party Advisory
→
https://bugzilla.redhat.com/show_bug.cgi?id=2247283Issue Tracking · Patch
→
https://lore.kernel.org/all/[email protected]/T/Mailing List · Patch
→
https://access.redhat.com/errata/RHSA-2024:2135
→
https://access.redhat.com/errata/RHSA-2024:2962
→
https://access.redhat.com/security/cve/CVE-2023-5088Third Party Advisory
→
https://bugzilla.redhat.com/show_bug.cgi?id=2247283Issue Tracking · Patch
→
https://lists.debian.org/debian-lts-announce/2024/03/msg00012.html
→
https://lists.debian.org/debian-lts-announce/2025/04/msg00042.html
→
https://lore.kernel.org/all/[email protected]/T/Mailing List · Patch
→
https://security.netapp.com/advisory/ntap-20231208-0005/

Quick Facts

CVE IDCVE-2023-5088
CVSS Score7.0 / 10
SeverityHIGH
WeaknessCWE-821
CISA KEVNo
Affected2 vendor(s)
PublishedNov 3, 2023

Related CVEs (CWE-821)

CVE-2024-1739
9.1
CVE-2022-1931
8.1
CVE-2024-1902
7.5
CVE-2026-56132
6.9
CVE-2024-6657
6.5
CVE-2026-21919
6.5

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2023-5088 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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