CVE-2020-15323Public exploitNetwork attack vector

Unauthenticated administrative access via hardcoded XMPP credentials

Published Jun 29, 2020 · Updated Aug 4, 2024

Hard-coded credentials in the XMPP configuration of Zyxel CloudCNM SecuManager 3.1.0 and 3.1.1 allow remote attackers to access administration. The world-readable xmpp_config.py file embeds the a1@chopin account and its static password, which authenticate to the administration endpoint on TCP port 5280. Network reachability to the WAN-facing service is sufficient to manage linked CPE accounts, including listing or deleting them.

CVSS severity9.8
Critical
EPSS probability1.25%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Hard-coded credentials in the XMPP configuration of Zyxel CloudCNM SecuManager 3.1.0 and 3.1.1 allow remote attackers to access administration. The world-readable xmpp_config.py file embeds the a1@chopin account and its static password, which authenticate to the administration endpoint on TCP port 5280. Network reachability to the WAN-facing service is sufficient to manage linked CPE accounts, including listing or deleting them.

The record

CVE
CVE-2020-15323
Published
Jun 29, 2020
Updated
Aug 4, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-798, T1078.001
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 29, 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 vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
7.5NIST NVDAV:N/AC:L/Au:N/C:P/I:P/A:P

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)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-798Use of Hard-coded Credentials
T1078.001Valid Accounts: Default Accounts

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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