CVE-2023-21520Network attack vector

Contact association disclosure via recovery response differences

Published Sep 12, 2023 · Updated Sep 25, 2024

PII enumeration in BlackBerry AtHoc 7.15 Self Service allows remote attackers to associate contact details with an IWS organization. The Credential Recovery workflow returns different outcomes depending on whether a submitted email address or text-messaging number exists. No authentication or user interaction is required, and the disclosed result is limited to confirming the contact's organizational association.

CVSS severity5.3
Medium
EPSS probability0.49%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

PII enumeration in BlackBerry AtHoc 7.15 Self Service allows remote attackers to associate contact details with an IWS organization. The Credential Recovery workflow returns different outcomes depending on whether a submitted email address or text-messaging number exists. No authentication or user interaction is required, and the disclosed result is limited to confirming the contact's organizational association.

The record

CVE
CVE-2023-21520
Published
Sep 12, 2023
Updated
Sep 25, 2024
Vendor
BlackBerry
Product
BlackBerry AtHoc
Classifications
T1589
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 12, 2023CVE publishedPublication date reported by the CVE source.
  2. Sep 25, 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?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=7.15

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

BlackBerry · BlackBerry AtHocversion=7.15

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)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1589Gather Victim Identity Information

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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