Vulnerability in Six Apart Ltd. Movable Type Advanced (Software Edition)
CVE-2025-53522
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N.
EPSS exploit prediction
EPSS: 0.002 (6.2th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 6th percentile — 6.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: 0.000
Affected products
- Six Apart Ltd. Movable Type Advanced (Software Edition) — versions 8.0.0 to 8.0.6, 8.4.0 to 8.4.2 (8 series), 7 r.5508 and earlier (7 series)
- Six Apart Ltd. Movable Type (Cloud Edition) — versions 8.6.0 (8 series), 7 r.5508 (7 series)
- Six Apart Ltd. Movable Type Premium (Advanced Edition) (Software — versions 2.09 and earlier (2 series), 1.66 and earlier (1 series)
- Six Apart Ltd. Movable Type Premium (Cloud Edition) — versions 2.09 (2 series), 1.66 (1 series)
- Six Apart Ltd. Movable Type Premium (Software Edition) — versions 2.09 and earlier (2 series), 1.66 and earlier (1 series)
- Six Apart Ltd. Movable Type (Software Edition) — versions 8.0.0 to 8.0.6, 8.4.0 to 8.4.2 (8 series), 7 r.5508 and earlier (7 series)
Weakness classification (CWE)
References
Frequently asked questions
- What is CVE-2025-53522?
- CVE-2025-53522 is a medium-severity vulnerability in Six Apart Ltd. Movable Type Advanced (Software Edition), classified under CWE-348. CVSS score: 5.3/10. Published 2025-08-20.
- How severe is CVE-2025-53522?
- Medium severity. CVSS v3 base score is 5.3 out of 10.