VulnerabilityPublished 12 Dec 2025

CVE-2025-62192: Japan Total System GroupSession Free edition · SQL Injection

Affects Japan Total System GroupSession Free editionSource CVE Database V5

Not known to be exploited · CVSS 5.4 Medium : upgrade to 5.3.0 when convenient.

Data as of 26 Oct 2026, 10:12 UTC

CVSS 3.0 base score

5.4Medium

How severe the flaw is on the 0–10 CVSS scale.

EPSS: 0.1% chance of exploitation in 30 days – higher than 8% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch: Available – fixed in 5.3.0

CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N

Attack Vector: Network
Attack Complexity: Low
Privileges Required: Low
User Interaction: None
Scope: Unchanged
Confidentiality: Low
Integrity: Low
Availability: None

Bold values are the worst case: easiest to exploit or largest impact.

Attack Vector: Network: The vulnerable component is bound to the network stack and the set of possible attackers extends beyond the other options listed, up to and including the entire Internet. Such a vulnerability is often termed 'remotely exploitable' and can be thought of as an attack being exploitable at the protocol level one or more network hops away (e.g., across one or more routers).
Attack Complexity: Low: Specialized access conditions or extenuating circumstances do not exist. An attacker can expect repeatable success against the vulnerable component.
Privileges Required: Low: The attacker is authorized with (i.e., requires) privileges that provide basic user capabilities that could normally affect only settings and files owned by a user. Alternatively, an attacker with Low privileges may have the ability to cause an impact only to non-sensitive resources.
User Interaction: None: The vulnerable system can be exploited without any interaction from any user.
Scope: Unchanged: An exploited vulnerability can only affect resources managed by the same security authority. In this case, the vulnerable component and the impacted component are either the same, or both are managed by the same security authority.
Confidentiality: Low: There is some loss of confidentiality. Access to some restricted information is obtained, but the attacker does not have control over what information is obtained, or the amount or kind of loss is limited. The information disclosure does not cause a direct, serious loss to the impacted component.
Integrity: Low: Modification of data is possible, but the attacker does not have control over the consequence of a modification, or the amount of modification is limited. The data modification does not have a direct, serious impact on the impacted component.
Availability: None: There is no impact to availability within the impacted component.

Definitions: FIRST CVSS v3.1 specification.

Exploitation evidence

Disclosed: evidence found.
CVE published 12 Dec 2025
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponised: Public exploit code exists in Metasploit or Exploit-DB, or CISA SSVC or the CVSS exploit maturity reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

What to do

Upgrade Japan Total System GroupSession Free edition to 5.3.0.

Affected software

Product	Affected	Fixed in
Japan Total System Co.,Ltd. GroupSession Free edition	Affected <5.3.0	Fixed in 5.3.0

AI-suggested

Upgrade affected GroupSession products to the fixed versions: Free edition to 5.3.0 or later, byCloud to 5.3.3 or later, and ZION to 5.3.2 or later.
Implement strict input validation and sanitization on all user inputs that interact with SQL queries to prevent injection of malicious code.
Use parameterized queries or prepared statements in the application code to ensure SQL commands are constructed safely.
Enforce strong authentication mechanisms and monitor user access logs to detect anomalous behavior indicative of credential compromise or misuse.
Limit user privileges to the minimum necessary to reduce the impact of any compromised accounts.
Conduct regular security audits and code reviews focusing on injection vulnerabilities.
Employ Web Application Firewalls (WAFs) with SQL Injection detection capabilities as an additional layer of defense.
Educate users about phishing and credential security to reduce the risk of account compromise.
Maintain up-to-date backups of critical data to enable recovery in case of data tampering.

Description

SQL Injection vulnerability exists in GroupSession Free edition prior to ver5.3.0, GroupSession byCloud prior to ver5.3.3, and GroupSession ZION prior to ver5.3.2. If exploited, information stored in the database may be obtained or altered by an authenticated user.

Impact

For European organizations using GroupSession products, this vulnerability poses a risk to the confidentiality and integrity of sensitive data stored within the collaboration platform's database. Exploitation could allow an authenticated user to access unauthorized information, modify records, or disrupt data accuracy, potentially impacting business operations and compliance with data protection regulations such as GDPR. Since the attack requires valid credentials, the threat is heightened in environments where user accounts are not tightly controlled or where credential compromise is possible. The vulnerability does not directly affect availability, but data integrity issues could indirectly disrupt workflows. Organizations relying on GroupSession for internal communication and document management could face operational risks and reputational damage if sensitive data is exposed or altered. The medium severity rating suggests a moderate but non-trivial risk, emphasizing the need for timely patching and monitoring of user activities to detect potential exploitation attempts.

References

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Exploitation evidence

What to do

Affected software

Description

AI analysisMachine-generated, updated 19 Dec 2025, 08:29 UTC

Technical details

References

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