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CVE-2020-5577

• Severity: high (CVSS 8.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.7% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2020-05-14 · updated 2026-06-17
• Weakness: CWE-434

Description

Movable Type series (Movable Type 7 r.4606 (7.2.1) and earlier (Movable Type 7), Movable Type Advanced 7 r.4606 (7.2.1) and earlier (Movable Type Advanced 7), Movable Type for AWS 7 r.4606 (7.2.1) and earlier (Movable Type for AWS 7), Movable Type 6.5.3 and earlier (Movable Type 6.5), Movable Type Advanced 6.5.3 and earlier (Movable Type Advanced 6.5), Movable Type 6.3.11 and earlier (Movable Type 6.3), Movable Type Advanced 6.3.11 and earlier (Movable Type 6.3), Movable Type Premium 1.29 and earlier, and Movable Type Premium Advanced 1.29 and earlier) allow remote authenticated attackers to upload arbitrary files and execute a php script via unspecified vectors.

Affected products

• Six Apart Ltd. Movable Type: through 1.29; from 6.3 through 6.3.11; from 6.5.0 through 6.5.3; from 7.0 through 7.2.1

References

• https://jvn.jp/en/jp/JVN28806943/index.html
• https://movabletype.org/news/2020/05/mt-730-660-6312-released.html
• https://jvn.jp/en/jp/JVN28806943/index.html
• https://movabletype.org/news/2020/05/mt-730-660-6312-released.html

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