What’s Vulnerable › Vulnerabilities

CVE-2020-8815

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.2% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2020-02-12 · updated 2026-06-17
• Weakness: CWE-20

Description

Improper connection handling in the base connection handler in IKTeam BearFTP before v0.3.1 allows a remote attacker to achieve denial of service via a Slowloris approach by sending a large volume of small packets.

Affected products

• Iktm Bearftp: before 0.3.1 — fixed in 0.3.1

How to fix

Upgrade to a fixed version: Iktm Bearftp 0.3.1. Check the vendor advisory for mitigations.

References

• https://github.com/kolya5544/BearFTP
• https://github.com/kolya5544/BearFTP/blob/f5a8047587c1a96456d4f291c12b038b9ab0d0c5/BearFTP/Program.cs#L503-L525
• https://github.com/kolya5544/BearFTP/commit/17a6ead72d4a25cbfcef5e27613aa0a5f88a4b26
• https://github.com/kolya5544/BearFTP/commit/66dc9d95e58bca133f265457d32007cdf38b66ad
• https://github.com/kolya5544/BearFTP/releases/tag/0.4.0
• https://github.com/kolya5544/BearFTP
• https://github.com/kolya5544/BearFTP/blob/f5a8047587c1a96456d4f291c12b038b9ab0d0c5/BearFTP/Program.cs#L503-L525
• https://github.com/kolya5544/BearFTP/commit/17a6ead72d4a25cbfcef5e27613aa0a5f88a4b26
• https://github.com/kolya5544/BearFTP/commit/66dc9d95e58bca133f265457d32007cdf38b66ad
• https://github.com/kolya5544/BearFTP/releases/tag/0.4.0

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