CVE-2022-50692Public exploitNetwork attack vector

Unauthorized access via reusable expired session cookies

Published Dec 30, 2025 · Updated Dec 30, 2025

Insufficient session expiration in SOUND4 BIG VOICE 2 1.30, BIG VOICE 4 1.2, and WM2 1.11 allows remote attackers to gain unauthorized access. The /checklogin.php authorization path continues to accept an old PHPSESSID cookie after the session should expire, reestablishing the prior user's web session. Exploitation requires possession of a previously valid session identifier; the published record supports web-application access but not command execution or service interruption.

CVSS severity6.9
Medium
EPSS probability0.57%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Insufficient session expiration in SOUND4 BIG VOICE 2 1.30, BIG VOICE 4 1.2, and WM2 1.11 allows remote attackers to gain unauthorized access. The /checklogin.php authorization path continues to accept an old PHPSESSID cookie after the session should expire, reestablishing the prior user's web session. Exploitation requires possession of a previously valid session identifier; the published record supports web-application access but not command execution or service interruption.

The record

CVE
CVE-2022-50692
Published
Dec 30, 2025
Updated
Dec 30, 2025
Vendor
Kantar Media
Product
BIG VOICE 2
Classifications
CWE-613, T1550.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Dec 30, 2025CVE publishedPublication date reported by the CVE source.
  2. Dec 30, 2025Record 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=1.30

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Kantar Media · BIG VOICE 2version=1.30
Kantar Media · WM2version=1.11
Kantar Media · BIG VOICE 4version=1.2

Published CVSS scores

7.5VulnCheckCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
6.9VulnCheckCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA: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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-613Insufficient Session Expiration
T1550.004Web Session Cookie

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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