CVE-2021-41011Network attack vector

Authentication information disclosure through undisclosed client flaw

Published Sep 22, 2021 · Updated Aug 4, 2024

Information disclosure in LINE client for iOS before 11.15.0 allows remote attackers to obtain authentication information. LINE Corporation has not published the affected service, the client-side locus, or the operation that exposes the authentication data. Exploitation requires a separate server-side bug and otherwise unspecified conditions; the reported consequence is disclosure of that service's authentication information.

CVSS severity7.5
High
EPSS probability1.14%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Information disclosure in LINE client for iOS before 11.15.0 allows remote attackers to obtain authentication information. LINE Corporation has not published the affected service, the client-side locus, or the operation that exposes the authentication data. Exploitation requires a separate server-side bug and otherwise unspecified conditions; the reported consequence is disclosure of that service's authentication information.

The record

CVE
CVE-2021-41011
Published
Sep 22, 2021
Updated
Aug 4, 2024
Vendor
LINE Corporation
Product
LINE
Classifications
Unavailable
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 22, 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?

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  1. Affected versionversion=<

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

LINE Corporation · LINEversion=<

Published CVSS scores

4.3NIST NVDAV:N/AC:M/Au:N/C:P/I:N/A:N
7.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/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

No sourced classifications are available.

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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