CVE-2025-5241
Denial-of-Service Vulnerability in MELSEC iQ-F Series
Overly Restrictive Account Lockout Mechanism vulnerability in Mitsubishi Electric Corporation MELSEC iQ-F Series allows a remote unauthenticated attacker to lockout legitimate users for a certain period by repeatedly attempting to login with incorrect passwords. The legitimate users will be unable to login until a certain period has passed after the lockout or until the product is reset.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- None
- Integrity
- None
- Availability
- Low
Exploit likelihood
What each source reports
CVE List Score used
Denial-of-Service Vulnerability in MELSEC iQ-F Series
Overly Restrictive Account Lockout Mechanism vulnerability in Mitsubishi Electric Corporation MELSEC iQ-F Series allows a remote unauthenticated attacker to lockout legitimate users for a certain period by repeatedly attempting to login with incorrect passwords. The legitimate users will be unable to login until a certain period has passed after the lockout or until the product is reset.
- Record
CVE-2025-5241- CVSS 3.1
- 5.3 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L - Weakness
- CWE-645
- Updated
- 2026-11-02
EUVDEUVD-2025-21089
Overly Restrictive Account Lockout Mechanism vulnerability in Mitsubishi Electric Corporation MELSEC iQ-F Series allows a remote unauthenticated attacker to lockout legitimate users for a certain period by repeatedly attempting to login with incorrect passwords. The legitimate users will be unable to login until a certain period has passed after the lockout or until the product is reset.
- Record
EUVD-2025-21089- CVSS 3.1
- 5.3 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-7w8q-8495-mwhj
Overly Restrictive Account Lockout Mechanism vulnerability in Mitsubishi Electric Corporation...
Overly Restrictive Account Lockout Mechanism vulnerability in Mitsubishi Electric Corporation MELSEC iQ-F Series allows a remote unauthenticated attacker to lockout legitimate users for a certain period by repeatedly attempting to login with incorrect passwords. The legitimate users will be unable to login until a certain period has passed after the lockout or until the product is reset.
- Record
GHSA-7w8q-8495-mwhj- CVSS 3.1
- 5.3 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L - Weakness
- CWE-645
- Updated
- 2026-11-02
NVD
Overly Restrictive Account Lockout Mechanism vulnerability in Mitsubishi Electric Corporation MELSEC iQ-F Series allows a remote unauthenticated attacker to lockout legitimate users for a certain period by repeatedly attempting to login with incorrect passwords. The legitimate users will be unable to login until a certain period has passed after the lockout or until the product is reset.
- Record
CVE-2025-5241- CVSS 3.1
- 5.3 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L - Weakness
- CWE-645
- Updated
- 2026-11-02
Affected products
- mitsubishi electric corporation melsec iq-f series fx5-cclgn-ms
- mitsubishi electric corporation melsec iq-f series fx5s-30mr/ds
- mitsubishi electric corporation melsec iq-f series fx5s-30mr/es
- mitsubishi electric corporation melsec iq-f series fx5s-30mt/ds
- mitsubishi electric corporation melsec iq-f series fx5s-30mt/dss
- mitsubishi electric corporation melsec iq-f series fx5s-30mt/es
- mitsubishi electric corporation melsec iq-f series fx5s-30mt/ess
- mitsubishi electric corporation melsec iq-f series fx5s-40mr/ds
- mitsubishi electric corporation melsec iq-f series fx5s-40mr/es
- mitsubishi electric corporation melsec iq-f series fx5s-40mt/ds
- mitsubishi electric corporation melsec iq-f series fx5s-40mt/dss
- mitsubishi electric corporation melsec iq-f series fx5s-40mt/es
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- mitsubishi electric corporation melsec iq-f series fx5s-40mt/ess
- mitsubishi electric corporation melsec iq-f series fx5s-60mr/ds
- mitsubishi electric corporation melsec iq-f series fx5s-60mr/es
- mitsubishi electric corporation melsec iq-f series fx5s-60mt/ds
- mitsubishi electric corporation melsec iq-f series fx5s-60mt/dss
- mitsubishi electric corporation melsec iq-f series fx5s-60mt/es
- mitsubishi electric corporation melsec iq-f series fx5s-60mt/ess
- mitsubishi electric corporation melsec iq-f series fx5s-80mr/es
- mitsubishi electric corporation melsec iq-f series fx5s-80mt/es
- mitsubishi electric corporation melsec iq-f series fx5s-80mt/ess
- mitsubishi electric corporation melsec iq-f series fx5u-32mr/ds
- mitsubishi electric corporation melsec iq-f series fx5u-32mr/es
- mitsubishi electric corporation melsec iq-f series fx5u-32mt/ds
- mitsubishi electric corporation melsec iq-f series fx5u-32mt/dss
- mitsubishi electric corporation melsec iq-f series fx5u-32mt/es
- mitsubishi electric corporation melsec iq-f series fx5u-32mt/ess
- mitsubishi electric corporation melsec iq-f series fx5u-64mr/ds
- mitsubishi electric corporation melsec iq-f series fx5u-64mr/es
- mitsubishi electric corporation melsec iq-f series fx5u-64mt/ds
- mitsubishi electric corporation melsec iq-f series fx5u-64mt/dss
- mitsubishi electric corporation melsec iq-f series fx5u-64mt/es
- mitsubishi electric corporation melsec iq-f series fx5u-64mt/ess
- mitsubishi electric corporation melsec iq-f series fx5u-80mr/ds
- mitsubishi electric corporation melsec iq-f series fx5u-80mr/es
- mitsubishi electric corporation melsec iq-f series fx5u-80mt/ds
- mitsubishi electric corporation melsec iq-f series fx5u-80mt/dss
- mitsubishi electric corporation melsec iq-f series fx5u-80mt/es
- mitsubishi electric corporation melsec iq-f series fx5u-80mt/ess
- mitsubishi electric corporation melsec iq-f series fx5uc-32mr/ds-ts
- mitsubishi electric corporation melsec iq-f series fx5uc-32mt/d
- mitsubishi electric corporation melsec iq-f series fx5uc-32mt/ds-ts
- mitsubishi electric corporation melsec iq-f series fx5uc-32mt/dss
- mitsubishi electric corporation melsec iq-f series fx5uc-32mt/dss-ts
- mitsubishi electric corporation melsec iq-f series fx5uc-64mt/d
- mitsubishi electric corporation melsec iq-f series fx5uc-64mt/dss
- mitsubishi electric corporation melsec iq-f series fx5uc-96mt/d
- mitsubishi electric corporation melsec iq-f series fx5uc-96mt/dss
- mitsubishi electric corporation melsec iq-f series fx5uj-24mr/ds
- mitsubishi electric corporation melsec iq-f series fx5uj-24mr/es
- mitsubishi electric corporation melsec iq-f series fx5uj-24mr/es-a
- mitsubishi electric corporation melsec iq-f series fx5uj-24mt/ds
- mitsubishi electric corporation melsec iq-f series fx5uj-24mt/dss
- mitsubishi electric corporation melsec iq-f series fx5uj-24mt/es
- mitsubishi electric corporation melsec iq-f series fx5uj-24mt/es-a
- mitsubishi electric corporation melsec iq-f series fx5uj-24mt/ess
- mitsubishi electric corporation melsec iq-f series fx5uj-40mr/ds
- mitsubishi electric corporation melsec iq-f series fx5uj-40mr/es
- mitsubishi electric corporation melsec iq-f series fx5uj-40mr/es-a
- mitsubishi electric corporation melsec iq-f series fx5uj-40mt/ds
- mitsubishi electric corporation melsec iq-f series fx5uj-40mt/dss
- mitsubishi electric corporation melsec iq-f series fx5uj-40mt/es
- mitsubishi electric corporation melsec iq-f series fx5uj-40mt/es-a
- mitsubishi electric corporation melsec iq-f series fx5uj-40mt/ess
- mitsubishi electric corporation melsec iq-f series fx5uj-60mr/ds
- mitsubishi electric corporation melsec iq-f series fx5uj-60mr/es
- mitsubishi electric corporation melsec iq-f series fx5uj-60mr/es-a
- mitsubishi electric corporation melsec iq-f series fx5uj-60mt/ds
- mitsubishi electric corporation melsec iq-f series fx5uj-60mt/dss
- mitsubishi electric corporation melsec iq-f series fx5uj-60mt/es
- mitsubishi electric corporation melsec iq-f series fx5uj-60mt/es-a
- mitsubishi electric corporation melsec iq-f series fx5uj-60mt/ess
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2025-5241 is a medium vulnerability (CVSS 5.3) in Mitsubishi Electric Corporation Melsec Iq-f Series Fx5-cclgn-ms, published July 11, 2025. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.45%, the 39th percentile. No source names a fixed version.