CVE-2020-3546: cisco asyncos Improper Input Validation
Vulnerability summary
CVE-2020-3546 is a medium (CVSS 5.3) Improper Input Validation vulnerability in cisco asyncos. EPSS estimates a 1.07% chance of exploitation in the next 30 days, higher than 64.4% of scored vulnerabilities.
Timeline
- 04-09-2020PublishedVulnerability first disclosed.
- 13-11-2024Last modifiedVulnerability information updated.
Description
A vulnerability in the web-based management interface of Cisco AsyncOS software for Cisco Email Security Appliance (ESA) could allow an unauthenticated, remote attacker to access sensitive information on an affected device. The vulnerability is due to insufficient validation of requests that are sent to the web-based management interface. An attacker could exploit this vulnerability by sending a crafted request to the interface of an affected device. A successful exploit could allow the attacker to obtain the IP addresses that are configured on the internal interfaces of the affected device. There is a workaround that addresses this vulnerability.
CVSS metrics
4 scores · 2 sources · 3 versions- NVDNIST5.3MediumCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
EPSS trend
Probability
1.07%
Chance of exploitation in the next 30 days
Percentile
64%
Versus all other CVEs
30-day change
0.00 pp
From 1.07% on 20-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Cisco2 products
- asyncos≤ 13.5.1
- cisco email security appliance (esa)n/a
1 vendor · 2 products
References
1 links- tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-esa-info-disclosure-vMJMMgJVendor AdvisoryX Refsource CISCO