CVE-2020-35547Network attack vector

Unauthenticated user-data access via library index page

Published Jan 29, 2021 · Updated Aug 4, 2024

Access control failure in NuPoint Messenger in Mitel MiCollab before 9.2 FP1 allows remote attackers to view and modify user data. A library index page exposes the data without enforcing authentication, although Mitel has not disclosed the underlying handler or failed authorization check. Network access to the page is sufficient; no account or user interaction is required, and the effect is limited to reading and changing NuPoint Messenger user data.

CVSS severity9.1
Critical
EPSS probability1.09%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Access control failure in NuPoint Messenger in Mitel MiCollab before 9.2 FP1 allows remote attackers to view and modify user data. A library index page exposes the data without enforcing authentication, although Mitel has not disclosed the underlying handler or failed authorization check. Network access to the page is sufficient; no account or user interaction is required, and the effect is limited to reading and changing NuPoint Messenger user data.

The record

CVE
CVE-2020-35547
Published
Jan 29, 2021
Updated
Aug 4, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 29, 2021CVE 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

6.4NVDAV:N/AC:L/Au:N/C:P/I:P/A:N
9.1NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/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.

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)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1190Exploit Public-Facing Application

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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