CVE-2016-11077Network attack vector

LDAP identity modification via superfluous admin API

Published Jun 19, 2020 · Updated Aug 6, 2024

Authorization weakness in Mattermost Server before 3.0.0 allows remote authenticated users with System Admin access to alter LDAP account identity data. The superfluous administrative API accepts replacement account-name and email values for identities managed by LDAP instead of preserving those directory-controlled fields. System Admin privileges and an LDAP-backed account are required; the bounded consequence is unauthorized modification of account identity data.

CVSS severity2.7
Low
EPSS probability0.62%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Authorization weakness in Mattermost Server before 3.0.0 allows remote authenticated users with System Admin access to alter LDAP account identity data. The superfluous administrative API accepts replacement account-name and email values for identities managed by LDAP instead of preserving those directory-controlled fields. System Admin privileges and an LDAP-backed account are required; the bounded consequence is unauthorized modification of account identity data.

The record

CVE
CVE-2016-11077
Published
Jun 19, 2020
Updated
Aug 6, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-732
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Jun 19, 2020CVE publishedPublication date reported by the CVE source.
  2. Aug 6, 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 privilegesadmin

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

4.0NIST NVDAV:N/AC:L/Au:S/C:N/I:P/A:N
2.7NIST NVDCVSS:3.1/AV:N/AC:L/PR:H/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
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-732Incorrect Permission Assignment for Critical Resource

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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