CVE-2020-25900Public exploitNetwork attack vector

Precise location disclosure via overbroad profile API

Published Jun 5, 2026 · Updated Jun 5, 2026

Information disclosure in HelloTalk for Android 3.4.1 and earlier allows remote attackers to obtain users' precise GPS coordinates. The profile API returns full-precision latitude and longitude regardless of the profile owner's selected display granularity, and the Android client caches the values in the userbase table of an unencrypted htbackup SQLite database. An attacker must view a target's profile and read the database from the attacker's own device; the coordinates can identify a residence even when the profile shows only a country or city.

CVSS severity5.3
Medium
EPSS probability0.20%
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 HelloTalk for Android 3.4.1 and earlier allows remote attackers to obtain users' precise GPS coordinates. The profile API returns full-precision latitude and longitude regardless of the profile owner's selected display granularity, and the Android client caches the values in the userbase table of an unencrypted htbackup SQLite database. An attacker must view a target's profile and read the database from the attacker's own device; the coordinates can identify a residence even when the profile shows only a country or city.

The record

CVE
CVE-2020-25900
Published
Jun 5, 2026
Updated
Jun 5, 2026
Vendor
HelloTalk
Product
HelloTalk
Classifications
CWE-359
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 5, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 5, 2026Record 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=0 <=3.4.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

HelloTalk · HelloTalkversion=0 <=3.4.1

Published CVSS scores

6.5IsopachCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
5.3MITRECVSS: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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-359Exposure of Private Personal Information to an Unauthorized Actor

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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