# CVE-2025-53522

## Summary

- **CVE ID:** CVE-2025-53522
- **Severity:** MEDIUM
- **CVSS Score:** 6.9 (CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N)
- **CWE:** CWE-348
- **Published:** Aug 20, 2025
- **Last Modified:** Mar 13, 2026

## Description

Movable Type contains an issue with use of less trusted source. If exploited, tampered email to reset a password may be sent by a remote unauthenticated attacker.

## Affected Products

- Six Apart Ltd. — Movable Type (Software Edition) (8.0.0 to 8.0.6)
- Six Apart Ltd. — Movable Type (Software Edition) (8.4.0 to 8.4.2 (8 series))
- Six Apart Ltd. — Movable Type (Software Edition) (7 r.5508 and earlier (7 series))
- Six Apart Ltd. — Movable Type Advanced (Software Edition) (8.0.0 to 8.0.6)
- Six Apart Ltd. — Movable Type Advanced (Software Edition) (8.4.0 to 8.4.2 (8 series))
- Six Apart Ltd. — Movable Type Advanced (Software Edition) (7 r.5508 and earlier (7 series))
- Six Apart Ltd. — Movable Type Premium (Software Edition) (2.09 and earlier (2 series))
- Six Apart Ltd. — Movable Type Premium (Software Edition) (1.66 and earlier (1 series))
- Six Apart Ltd. — Movable Type Premium (Advanced Edition) (Software Edition) (2.09 and earlier (2 series))
- Six Apart Ltd. — Movable Type Premium (Advanced Edition) (Software Edition) (1.66 and earlier (1 series))
- Six Apart Ltd. — Movable Type (Cloud Edition) (8.6.0 (8 series))
- Six Apart Ltd. — Movable Type (Cloud Edition) (7 r.5508 (7 series))
- Six Apart Ltd. — Movable Type Premium  (Cloud Edition) (2.09 (2 series))
- Six Apart Ltd. — Movable Type Premium  (Cloud Edition) (1.66 (1 series))

## References

- [CNA](https://movabletype.org/news/2025/08/mt-843-released.html)
- [CNA](https://jvn.jp/en/jp/JVN76729865/)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.18%
- **EPSS Percentile:** 7.1

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-10._