CVE-2020-15334Public exploitNetwork attack vector

Terminal display manipulation via unsanitized gateway logs

Published Jun 26, 2020 · Updated Aug 4, 2024

Escape-sequence injection in Zyxel CloudCNM SecuManager 3.1.0 and 3.1.1 allows remote attackers to alter an administrator's terminal. The root-run xmppCnrSender.py gateway on WAN port 8083 writes unsanitized HTTP request data to /var/log/axxmpp.log. No authentication is required; viewing the poisoned log with cat or tail interprets the sequences and can change the terminal title.

CVSS severity5.3
Medium
EPSS probability0.78%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Escape-sequence injection in Zyxel CloudCNM SecuManager 3.1.0 and 3.1.1 allows remote attackers to alter an administrator's terminal. The root-run xmppCnrSender.py gateway on WAN port 8083 writes unsanitized HTTP request data to /var/log/axxmpp.log. No authentication is required; viewing the poisoned log with cat or tail interprets the sequences and can change the terminal title.

The record

CVE
CVE-2020-15334
Published
Jun 26, 2020
Updated
Aug 4, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
Unavailable
Attack vector
network
Privileges
unauthenticated

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 vectornetwork
Required privilegesunauthenticated

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:N/I:L/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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

No sourced classifications are available.

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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