CVE-2024-10748Public exploit

Local data disclosure via embedded Realm key

Published Nov 4, 2024 · Updated Nov 4, 2024

Use of a default cryptographic key in COSMOTE WHAT'S UP 4.47.3 for Android allows local users to decrypt the app's Realm database. RealmDB.java embeds defaultRealmKey in the APK and converts it to bytes to encrypt defaultKMMV4.realm.enc, so package extraction reveals the database key. Exploitation requires access to the APK plus the app database or a backup and exposes stored personal and payment data without enabling modification or service interruption.

CVSS severity4.7
Medium
EPSS probability0.26%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Use of a default cryptographic key in COSMOTE WHAT'S UP 4.47.3 for Android allows local users to decrypt the app's Realm database. RealmDB.java embeds defaultRealmKey in the APK and converts it to bytes to encrypt defaultKMMV4.realm.enc, so package extraction reveals the database key. Exploitation requires access to the APK plus the app database or a backup and exposes stored personal and payment data without enabling modification or service interruption.

The record

CVE
CVE-2024-10748
Published
Nov 4, 2024
Updated
Nov 4, 2024
Vendor
COSMOTE Greece
Product
WHAT'S UP
Classifications
CWE-1394, CWE-798, T1552.001
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Nov 4, 2024CVE publishedPublication date reported by the CVE source.
  2. Nov 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?

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

  1. Affected versionversion=4.47.3

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

COSMOTE Greece · WHAT'S UPversion=4.47.3
COSMOTE · WHAT'S UPversion=4.47.3

Published CVSS scores

2.0VulDBCVSS:4.0/AV:L/AC:H/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
1.0VulDBAV:L/AC:H/Au:S/C:P/I:N/A:N
4.7NIST NVDCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N
2.5VulDBCVSS:3.1/AV:L/AC:H/PR:L/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.

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)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-1394Use of Default Cryptographic Key
CWE-798Use of Hard-coded Credentials
T1552.001Unsecured Credentials: Credentials In Files

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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