CVE-2021-45464
HIGH
8.8
CVSS Score
Published: April 15, 2023 at 12:00 AM UTC
Updated: June 17, 2026 at 04:13 AM UTC
1 product affected across 1 vendorKvmtool
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Severity
HIGH8.8
Exploit prediction
EPSS 0.4%
SSVC
No known exploit
Description
kvmtool through 39181fc allows an out-of-bounds write, related to virtio/balloon.c and virtio/pci.c. This allows a guest OS user to execute arbitrary code on the host machine.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
All versions
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
References (4)
ExploitThird Party Advisory
Source: [email protected]
https://www.kalmarunionen.dk/writeups/2021/hxp-2021/lkvm/SSVC — Action Prioritization
SSVCNo known exploitNot automatableTotal impact
SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.
CVSS
8.8HIGHCISA-ADP
- Attack Vector
- LOCAL
- Complexity
- LOW
- Privileges
- LOW
- User Interaction
- NONE
- Scope
- CHANGED
- Confidentiality
- HIGH
- Integrity
- HIGH
- Availability
- HIGH
Vector?
Quick Info
StatusMODIFIED
CWE
CWE-787
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