CVE-2022-47952Public exploit

Protected file discovery via distinguishable helper errors

Published Jan 1, 2023 · Updated Apr 10, 2025

Information disclosure in Linux Containers LXC 5.0.1 and earlier allows local users to infer the existence of protected files. The setuid-root lxc-user-nic delete path opens an attacker-supplied network namespace path, then returns different errors when opening fails and when the opened object is not a network namespace. Any local low-privileged account can use those distinguishable responses as a file-existence oracle, but cannot read file contents through this flaw.

CVSS severity3.3
Low
EPSS probability0.70%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Information disclosure in Linux Containers LXC 5.0.1 and earlier allows local users to infer the existence of protected files. The setuid-root lxc-user-nic delete path opens an attacker-supplied network namespace path, then returns different errors when opening fails and when the opened object is not a network namespace. Any local low-privileged account can use those distinguishable responses as a file-existence oracle, but cannot read file contents through this flaw.

The record

CVE
CVE-2022-47952
Published
Jan 1, 2023
Updated
Apr 10, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-203, T1083
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jan 1, 2023CVE publishedPublication date reported by the CVE source.
  2. Apr 10, 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?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

3.3NISTCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
3.3CISA ADPCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

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.

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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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-203Observable Discrepancy
T1083File and Directory Discovery

Public exploit references

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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