Vulnerability Monitor

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CVE-2024-20256


A vulnerability in the web-based management interface of Cisco AsyncOS Software for Cisco Secure Email and Web Manager and Secure Web Appliance could allow an authenticated, remote attacker to conduct an XSS attack against a user of the interface. This vulnerability is due to insufficient validation of user input. An attacker could exploit this vulnerability by persuading a user of an affected interface to click a crafted link. A successful exploit could allow the attacker to execute arbitrary script code in the context of the affected interface or access sensitive, browser-based information.


Security Impact Summary

This vulnerability carries a MEDIUM severity rating with a CVSS v3.1 score of 4.8, indicating it can be exploited remotely over the network with relatively low complexity though user interaction is required . The vulnerability impacts limited data confidentiality, limited integrity, for affected systems. Impacting 22 products from cisco, from cisco, from cisco and 19 others, organizations running these solutions should prioritize assessment and patching.

Historical Context

Reported in 2024, this vulnerability emerged during an era marked by increased sophistication in supply chain attacks, cloud infrastructure vulnerabilities, and software-as-a-service (SaaS) security challenges. Security practices during this period emphasized zero-trust architectures, container security, and API protection.


Published

2024-05-15T18:15:08.720

Last Modified

2025-08-07T17:10:32.350

Status

Analyzed

Source

[email protected]

Severity

CVSSv3.1: 4.8 (MEDIUM)

Weaknesses
  • Type: Secondary
    CWE-79

Affected Vendors & Products
Type Vendor Product Version/Range Vulnerable?
Operating System cisco asyncos 11.7.0-406 Yes
Operating System cisco asyncos 11.7.0-418 Yes
Operating System cisco asyncos 11.7.1-006 Yes
Operating System cisco asyncos 11.7.1-020 Yes
Operating System cisco asyncos 11.7.1-049 Yes
Operating System cisco asyncos 11.7.2-011 Yes
Operating System cisco asyncos 11.8.0-414 Yes
Operating System cisco asyncos 11.8.1-023 Yes
Operating System cisco asyncos 11.8.3-018 Yes
Operating System cisco asyncos 11.8.3-021 Yes
Operating System cisco asyncos 12.0.1-268 Yes
Operating System cisco asyncos 12.0.3-007 Yes
Operating System cisco asyncos 12.5.1-011 Yes
Operating System cisco asyncos 12.5.2-007 Yes
Operating System cisco asyncos 12.5.4-005 Yes
Operating System cisco asyncos 12.5.5-004 Yes
Operating System cisco asyncos 12.5.6-008 Yes
Operating System cisco asyncos 14.0.2-012 Yes
Operating System cisco asyncos 14.0.3-014 Yes
Operating System cisco asyncos 14.0.4-005 Yes
Operating System cisco asyncos 14.5.0-498 Yes
Operating System cisco asyncos 14.5.1-016 Yes
Operating System cisco asyncos 15.0.0-322 Yes
Application cisco secure_web_appliance_virtual_s1000v - No
Application cisco secure_web_appliance_virtual_s100v - No
Application cisco secure_web_appliance_virtual_s300v - No
Application cisco secure_web_appliance_virtual_s600v - No
Hardware cisco secure_web_appliance_s196 - No
Hardware cisco secure_web_appliance_s396 - No
Hardware cisco secure_web_appliance_s696 - No
Application cisco secure_email_and_web_manager_virtual_appliance_m100v - Yes
Application cisco secure_email_and_web_manager_virtual_appliance_m300v - Yes
Application cisco secure_email_and_web_manager_virtual_appliance_m600v - Yes
Operating System cisco asyncos 9.0.0-087 Yes
Operating System cisco asyncos 11.0.0-115 Yes
Operating System cisco asyncos 11.0.1-161 Yes
Operating System cisco asyncos 11.5.1-105 Yes
Operating System cisco asyncos 12.0.0-452 Yes
Operating System cisco asyncos 12.0.1-011 Yes
Operating System cisco asyncos 12.5.0-636 Yes
Operating System cisco asyncos 12.5.0-658 Yes
Operating System cisco asyncos 12.5.0-670 Yes
Operating System cisco asyncos 12.5.0-678 Yes
Operating System cisco asyncos 12.8.1-002 Yes
Operating System cisco asyncos 12.8.1-021 Yes
Operating System cisco asyncos 13.0.0-277 Yes
Operating System cisco asyncos 13.6.2-078 Yes
Operating System cisco asyncos 13.8.1-068 Yes
Operating System cisco asyncos 13.8.1-074 Yes
Operating System cisco asyncos 13.8.1-108 Yes
Operating System cisco asyncos 14.0.0-404 Yes
Operating System cisco asyncos 14.1.0-223 Yes
Operating System cisco asyncos 14.1.0-227 Yes
Operating System cisco asyncos 14.2.0-212 Yes
Operating System cisco asyncos 14.2.0-224 Yes
Operating System cisco asyncos 14.2.1-020 Yes
Operating System cisco asyncos 14.3.0-120 Yes
Operating System cisco asyncos 15.0.0-334 Yes
Hardware cisco secure_email_and_web_manager_m170 - No
Hardware cisco secure_email_and_web_manager_m190 - No
Hardware cisco secure_email_and_web_manager_m195 - No
Hardware cisco secure_email_and_web_manager_m380 - No
Hardware cisco secure_email_and_web_manager_m390 - No
Hardware cisco secure_email_and_web_manager_m390x - No
Hardware cisco secure_email_and_web_manager_m395 - No
Hardware cisco secure_email_and_web_manager_m680 - No
Hardware cisco secure_email_and_web_manager_m690 - No
Hardware cisco secure_email_and_web_manager_m690x - No
Hardware cisco secure_email_and_web_manager_m695 - No

References

How SecUtils Interprets This CVE

SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For cisco's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.