CVE-2025-61858VulnerabilityPublished 10 Oct 2025

CVE-2025-61858: FUJI ELECTRIC CO., LTD. / Hakko Electronics V-SFT · Out-of-bounds Write

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

Not known to be exploited · CVSS 7.8 High.

Data as of 25 Oct 2026, 19:02 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 7% 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 2026-10-25.

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 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

1. Apply official patches from FUJI ELECTRIC CO., LTD. / Hakko Electronics Co., Ltd. as soon as they become available to remediate the vulnerability. 2. Until patches are released, restrict the opening of V-SFT files to trusted sources only, employing strict file validation and sandboxing where possible. 3. Implement application whitelisting to prevent unauthorized execution of potentially malicious files. 4. Educate users on the risks of opening unsolicited or unexpected V-SFT files to reduce the likelihood of successful social engineering. 5. Monitor system logs and network traffic for unusual activity indicative of exploitation attempts, such as unexpected crashes or anomalous process behavior. 6. Employ endpoint detection and response (EDR) solutions capable of detecting memory corruption and code injection techniques. 7. Segment industrial control networks to limit lateral movement in case of compromise. 8. Maintain up-to-date backups of critical systems to enable recovery from potential disruptions. 9. Coordinate with vendors and cybersecurity authorities for timely threat intelligence and guidance.

Description

An out-of-bounds write vulnerability exists in VS6ComFile!set_AnimationItem 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, especially those involved in industrial automation, manufacturing, and critical infrastructure, this vulnerability poses a substantial risk. Exploitation could lead to operational downtime due to system crashes, compromising production lines and causing financial losses. Information disclosure could expose sensitive operational data or intellectual property, undermining competitive advantage and regulatory compliance. Arbitrary code execution could allow attackers to implant persistent malware, manipulate control processes, or pivot within networks, potentially leading to broader industrial espionage or sabotage. Given the reliance on V-SFT in sectors such as automotive, energy, and manufacturing, the impact extends beyond individual organizations to national economic and security interests. Disruption of industrial control systems could also have safety implications, increasing the risk of accidents or environmental harm. The requirement for user interaction limits remote exploitation but does not eliminate risk, as social engineering or insider threats could facilitate attack vectors. The absence of known exploits currently provides a window for proactive defense, but the high severity score underscores the need for urgent attention.

References

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Exploitation evidence

What to do

Affected software

Description

AI analysisMachine-generated, updated 10 Oct 2025, 10:45 UTC

Technical details

References

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