CVE-2021-1516: cisco cisco web security appliance (wsa)
Vulnerability summary
CVE-2021-1516 is a medium (CVSS 6.5) vulnerability in cisco cisco web security appliance (wsa). EPSS estimates a 1.00% chance of exploitation in the next 30 days, higher than 62.2% of scored vulnerabilities.
Timeline
- 06-05-2021PublishedVulnerability first disclosed.
- 08-11-2024Last modifiedVulnerability information updated.
Description
A vulnerability in the web-based management interface of Cisco AsyncOS Software for Cisco Content Security Management Appliance (SMA), Cisco Email Security Appliance (ESA), and Cisco Web Security Appliance (WSA) could allow an authenticated, remote attacker to access sensitive information on an affected device. The vulnerability exists because confidential information is included in HTTP requests that are exchanged between the user and the device. An attacker could exploit this vulnerability by looking at the raw HTTP requests that are sent to the interface. A successful exploit could allow the attacker to obtain some of the passwords that are configured throughout the interface.
CVSS metrics
3 scores · 2 sources · 2 versions- CVE.orgCNA4.3MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:NDiffers
EPSS trend
Probability
1.00%
Chance of exploitation in the next 30 days
Percentile
62%
Versus all other CVEs
30-day change
-0.15 pp
From 1.16% on 18-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Cisco5 products
- cisco web security appliance (wsa)n/a
- content_security_management_appliancena
- email_security_appliance_firmwarena
- ironport_web_security_appliance13.6.2-023 | 14.0.0-090 | 14.0.0-133 | 14.0.0-292 | 14.0.0-300
- web_security_appliancena
1 vendor · 5 products
References
1 links- tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-esa-wsa-sma-info-gY2AEz2HVendor AdvisoryX Refsource CISCO