VulnerabilityPublished 10 Oct 2025

CVE-2025-61864: FUJI ELECTRIC CO., LTD. / Hakko Electronics V-SFT · Use After Free

Affects FUJI ELECTRIC CO., LTD. / Hakko Electronics V-SFTSource CVE Database V5

Not known to be exploited · CVSS 7.8 High.

Data as of 26 Oct 2026, 10:12 UTC

CVSS 3.1 base score

7.8High

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

EPSS: 0.1% chance of exploitation in 30 days – higher than 6% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

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

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

Attack Vector: Local: The vulnerable component is not bound to the network stack and the attacker’s path is via read/write/execute capabilities. Either: the attacker exploits the vulnerability by accessing the target system locally (e.g., keyboard, console), or remotely (e.g., SSH); or the attacker relies on User Interaction by another person to perform actions required to exploit the vulnerability (e.g., tricking a legitimate user into opening a malicious document).
Attack Complexity: Low: Specialized access conditions or extenuating circumstances do not exist. An attacker can expect repeatable success against the vulnerable component.
Privileges Required: None: The attacker is unauthorized prior to attack, and therefore does not require any access to settings or files to carry out an attack.
User Interaction: Required: Successful exploitation of this vulnerability requires a user to take some action before the vulnerability can be exploited.
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: High: There is total loss of confidentiality, resulting in all resources within the impacted component being divulged to the attacker. Alternatively, access to only some restricted information is obtained, but the disclosed information presents a direct, serious impact.
Integrity: High: There is a total loss of integrity, or a complete loss of protection. For example, the attacker is able to modify any/all files protected by the impacted component. Alternatively, only some files can be modified, but malicious modification would present a direct, serious consequence to the impacted component.
Availability: High: There is total loss of availability, resulting in the attacker being able to fully deny access to resources in the impacted component; this loss is either sustained (while the attacker continues to deliver the attack) or persistent (the condition persists even after the attack has completed). Alternatively, the attacker has the ability to deny some availability, but the loss of availability presents a direct, serious consequence to the impacted component (e.g., the attacker cannot disrupt existing connections, but can prevent new connections; the attacker can repeatedly exploit a vulnerability that, in each instance of a successful attack, leaks a only small amount of memory, but after repeated exploitation causes a service to become completely unavailable).

Definitions: FIRST CVSS v3.1 specification.

Exploitation evidence

Disclosed: evidence found.
CVE published 10 Oct 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 24 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

Affected software

Product	Affected	Fixed in
FUJI ELECTRIC CO., LTD. / Hakko Electronics Co., Ltd. V-SFT	Affected <=6.2.7.0	Fixed in–

AI-suggested

Restrict the sources of V-SFT files to trusted and verified origins to reduce the risk of opening malicious files.
Implement strict application whitelisting and execution control policies to prevent unauthorized or unexpected execution of V-SFT or related processes.
Educate users about the risks of opening files from untrusted sources and enforce policies to verify file authenticity before opening.
Monitor application logs and system behavior for signs of abnormal crashes or suspicious activity related to V-SFT.
Employ network segmentation to isolate systems running V-SFT, limiting lateral movement in case of compromise.
Once available, promptly apply official patches or updates from FUJI ELECTRIC / Hakko Electronics to remediate the vulnerability.
Consider deploying endpoint detection and response (EDR) solutions capable of detecting exploitation attempts involving use-after-free conditions or abnormal memory access patterns.
Maintain regular backups and incident response plans tailored to industrial control system environments to minimize downtime and data loss.

Description

A use after free vulnerability exists in VS6ComFile!load_link_inf of V-SFT v6.2.7.0 and earlier. Opening specially crafted V-SFT files may lead to information disclosure, affected system's abnormal end (ABEND), and arbitrary code execution.

Impact

For European organizations, particularly those in manufacturing, industrial automation, and critical infrastructure sectors, this vulnerability poses a substantial risk. Exploitation could lead to unauthorized disclosure of sensitive operational data, disruption of industrial control systems, and potential takeover of affected systems through arbitrary code execution. Such impacts could result in production downtime, safety hazards, financial losses, and damage to organizational reputation. Given the local attack vector and requirement for user interaction, the threat is more relevant to internal users or attackers with some access to the environment, such as through phishing or insider threats. However, the high impact on confidentiality, integrity, and availability means that successful exploitation could have severe consequences for operational continuity and data security. European organizations relying on V-SFT for automation tasks should consider this vulnerability a priority for risk management and incident preparedness.

References

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Exploitation evidence

What to do

Affected software

Description

AI analysisMachine-generated, updated 10 Oct 2025, 11:21 UTC

Technical details

References

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