Improper Validation of Specified Index, Position, or Offset in Input in Mitsubishi Electric MELSEC iQ-F Series
| Risk | High |
| Patch available | NO |
| Number of vulnerabilities | 1 |
| CVE-ID | CVE-2025-3755 |
| CWE-ID | CWE-20 |
| Exploitation vector | Network |
| Public exploit | N/A |
| Vulnerable software |
MELSEC iQ-F FX5U Hardware solutions / Routers & switches, VoIP, GSM, etc MELSEC iQ-F FX5UC Hardware solutions / Routers & switches, VoIP, GSM, etc MELSEC iQ-F FX5UC-32MT/DS-TS Hardware solutions / Routers & switches, VoIP, GSM, etc MELSEC iQ-F FX5UC-32MT/DSS-TS Hardware solutions / Routers & switches, VoIP, GSM, etc MELSEC iQ-F FX5UC-32MR/DS-TS Hardware solutions / Routers & switches, VoIP, GSM, etc MELSEC iQ-F FX5UJ Hardware solutions / Routers & switches, VoIP, GSM, etc MELSEC iQ-F FX5S Hardware solutions / Routers & switches, VoIP, GSM, etc |
| Vendor | Mitsubishi Electric |
Security Bulletin
This security bulletin contains one high risk vulnerability.
1) Input validation error
EUVDB-ID: #VU110187
Risk: High
CVSSv4.0: 6.8 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]
CVE-ID: CVE-2025-3755
CWE-ID:
CWE-20 - Improper input validation
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to compromise the target system.
The vulnerability exists due to insufficient validation of user-supplied input. A remote attacker can pass specially crafted input to the application and perform a denial of service (DoS) attack or gain access to sensitive information.
MitigationCybersecurity Help is currently unaware of any official solution to address this vulnerability.
Vulnerable software versionsMELSEC iQ-F FX5U: All versions
MELSEC iQ-F FX5UC: All versions
MELSEC iQ-F FX5UC-32MT/DS-TS: All versions
MELSEC iQ-F FX5UC-32MT/DSS-TS: All versions
MELSEC iQ-F FX5UC-32MR/DS-TS: All versions
MELSEC iQ-F FX5UJ: All versions
MELSEC iQ-F FX5S: All versions
CPE2.3- cpe:2.3:h:mitsubishi_electric:melsec_iq-f_fx5u:*:*:*:*:*:*:*:*
- cpe:2.3:h:mitsubishi_electric:melsec_iq-f_fx5uc:*:*:*:*:*:*:*:*
- cpe:2.3:h:mitsubishi_electric:melsec_iq-f_fx5uc-32mt_ds-ts:*:*:*:*:*:*:*:*
- cpe:2.3:h:mitsubishi_electric:melsec_iq-f_fx5uc-32mt_dss-ts:*:*:*:*:*:*:*:*
- cpe:2.3:h:mitsubishi_electric:melsec_iq-f_fx5uc-32mr_ds-ts:*:*:*:*:*:*:*:*
- cpe:2.3:h:mitsubishi_electric:melsec_iq-f_fx5uj:*:*:*:*:*:*:*:*
- cpe:2.3:h:mitsubishi_electric:melsec_iq-f_fx5s:*:*:*:*:*:*:*:*
https://jvn.jp/vu/JVNVU94070048/
https://www.mitsubishielectric.com/psirt/vulnerability/pdf/2025-003_en.pdf
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
How the attacker can exploit this vulnerability?
The attacker would have to send a specially crafted request to the affected device in order to exploit this vulnerability.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
