CVE-2023-50711

Out-of-bounds memory access via unchecked array lengths

Published Jan 2, 2024 · Updated Feb 13, 2025

Out-of-bounds access in rust-vmm vmm-sys-util 0.5.0 through 0.11.1 allows local users to corrupt memory via crafted serialized data. FamStructWrapper::deserialize replaces its allocated wrapper header with a deserialized header without verifying that the header length equals the separately allocated flexible-array length. Reachability requires a consuming application to enable Serde deserialization and process attacker-controlled state; resulting access can alter memory or interrupt that process.

CVSS severity5.7
Medium
EPSS probability0.65%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Out-of-bounds access in rust-vmm vmm-sys-util 0.5.0 through 0.11.1 allows local users to corrupt memory via crafted serialized data. FamStructWrapper::deserialize replaces its allocated wrapper header with a deserialized header without verifying that the header length equals the separately allocated flexible-array length. Reachability requires a consuming application to enable Serde deserialization and process attacker-controlled state; resulting access can alter memory or interrupt that process.

The record

CVE
CVE-2023-50711
Published
Jan 2, 2024
Updated
Feb 13, 2025
Vendor
rust-vmm
Product
vmm-sys-util
Classifications
Unavailable
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 2, 2024CVE publishedPublication date reported by the CVE source.
  2. Feb 13, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=>= 0.5.0, < 0.12.0

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

rust-vmm · vmm-sys-utilversion=>= 0.5.0, < 0.12.0

Published CVSS scores

5.7GitHubCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:L

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

No sourced classifications are available.

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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