CVE-2020-3548 describes a denial-of-service vulnerability in Cisco AsyncOS software for Cisco Email Security Appliance (ESA) due to inefficient processing of incoming TLS traffic. An unauthenticated, remote attacker can exploit this by sending crafted TLS packets, leading to high CPU usage and degraded performance. Rated 7.5 HIGH, this vulnerability has a low attack complexity and no known workarounds. There is no evidence of active exploitation, public exploit code, or significant community discussion.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
<= 13.5.1-277CPE matchmatch criteria | cpe:2.3:a:cisco:email_security_appliance:*:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
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