CVE-2020-7845: Jiransecurity Spamsniper

Critical severity, CVSS 9.8. EPSS: 2.8% chance of exploitation in the next 30 days.

Spamsniper 5.0 ~ 5.2.7 contain a stack-based buffer overflow vulnerability caused by improper boundary checks when parsing MAIL FROM command. It leads remote attacker to execute arbitrary code via crafted packet.

Affected products

• Jiransecurity Spamsniper: from 5.0.2, before 5.7.6 (fixed in 5.7.6)

Published 2020-12-27. Last modified 2026-06-17.