What is CVE-2021-1534?

CVE-2021-1534 is a medium-severity vulnerability in Cisco Email Security Appliance (Esa), classified under Improper Input Validation. CVSS score: 5.8/10. Published 2021-10-06.

How severe is CVE-2021-1534?

Medium severity. CVSS v3 base score is 5.8 out of 10.

Improper input validation in Cisco Email Security Appliance (Esa)

CVE-2021-1534

A vulnerability in the antispam protection mechanisms of Cisco AsyncOS Software for Cisco Email Security Appliance (ESA) could allow an unauthenticated, remote attacker to bypass the URL reputation filters on an affected device. This vulne…

Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)

EPSS: 0.003 (51.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.8 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N.

Affected products

Cisco Email Security Appliance (Esa) — versions n/a

Weakness classification (CWE)

CWE-20 — Improper Input Validation

References

20211006 Cisco Email Security Appliance URL Filtering Bypass Vulnerability (vendor-advisory, x_refsource_CISCO)

Frequently asked questions

What is CVE-2021-1534?: CVE-2021-1534 is a medium-severity vulnerability in Cisco Email Security Appliance (Esa), classified under Improper Input Validation. CVSS score: 5.8/10. Published 2021-10-06.
How severe is CVE-2021-1534?: Medium severity. CVSS v3 base score is 5.8 out of 10.