CVE-2020-15328

Local data disclosure via world-readable blob storage

Published Jun 26, 2020 · Updated Aug 4, 2024

Incorrect permissions in Zyxel CloudCNM SecuManager 3.1.0 and 3.1.1 allow local users to read blob-storage data. The /opt/axess/var/blobstorage directory is installed with mode 0755, granting every local account read and traversal access to persistent application blobs. An account on the appliance is required; the demonstrated consequence is exposure of blob contents, with no write or service-interruption impact established for this CVE.

CVSS severity5.3
Medium
EPSS probability0.85%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Incorrect permissions in Zyxel CloudCNM SecuManager 3.1.0 and 3.1.1 allow local users to read blob-storage data. The /opt/axess/var/blobstorage directory is installed with mode 0755, granting every local account read and traversal access to persistent application blobs. An account on the appliance is required; the demonstrated consequence is exposure of blob contents, with no write or service-interruption impact established for this CVE.

The record

CVE
CVE-2020-15328
Published
Jun 26, 2020
Updated
Aug 4, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-732, T1005
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 26, 2020CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 2024Record 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

5.3NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/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 exploitUnconfirmed

Weakness, pattern, technique

CWE-732Incorrect Permission Assignment for Critical Resource
T1005Data from Local System

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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