PT-2025-27821 · Mitsubishi · Melsec Iq-F Series

Loc Nguyen + 3 · Published 2025-07-03 · Updated 2025-07-11 · CVE-2025-5241

Positive Technologies (AI Summary)

CVSS v3.1

5.3

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions: Mitsubishi Electric MELSEC iQ-F Series (affected versions not specified)

Description: The software contains an overly restrictive account lockout mechanism. A remote, unauthenticated attacker can lockout legitimate users by repeatedly attempting to log in with incorrect passwords. This prevents legitimate users from logging in for a specific duration or until the product is reset.

Recommendations: At the moment, there is no information about a newer version that contains a fix for this vulnerability.

DoS

Weakness Enumeration

CWE-645

Related Identifiers

BDU:2026-00132

CVE-2025-5241

Affected Products

Melsec Iq-F Series

References · 8

• https://mitsubishielectric.com/psirt/vulnerability/pdf/2025-005_en.pdf · Vendor Advisory
• https://bdu.fstec.ru/vul/2026-00132 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2025-5241 · Security Note
• https://cisa.gov/news-events/ics-advisories/icsa-25-184-04 · Note
• https://t.me/cvetracker/27517 · Telegram Post
• https://twitter.com/CVEnew/status/1943668151230841104 · Twitter Post
• https://twitter.com/0dayPublishing/status/1940810027742179550 · Twitter Post
• https://t.me/cvenotify/128484 · Telegram Post