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CVE-2025-20183

Severity CVSS v4.0:
Pending analysis
Type:
CWE-20 Input Validation
Publication date:
05/02/2025
Last modified:
05/08/2025

Description

A vulnerability in a policy-based Cisco Application Visibility and Control (AVC) implementation of Cisco AsyncOS Software for Cisco Secure Web Appliance could allow an unauthenticated, remote attacker to evade the antivirus scanner and download a malicious file onto an endpoint.&amp;nbsp;<br /> <br /> The vulnerability is due to improper handling of a crafted range request header. An attacker could exploit this vulnerability by sending an HTTP request with a crafted range request header through the affected device. A successful exploit could allow the attacker to evade the antivirus scanner and download malware onto the endpoint without detection by Cisco Secure Web Appliance.

Impact

Vector 3.x
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N CVSS v3.1 Severity and Metrics:

Base Score: 5.80 MEDIUM
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N

Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope (S): Changed
Confidentiality (C): None
Integrity (I): Low
Availability (A): None

Base Score 3.x
5.80
Severity 3.x
MEDIUM

Vulnerable products and versions

CPE From Up to
cpe:2.3:o:cisco:asyncos:11.8.0-414:*:*:*:*:*:*:*
cpe:2.3:o:cisco:asyncos:11.8.0-429:*:*:*:*:*:*:*
cpe:2.3:o:cisco:asyncos:11.8.0-453:*:*:*:*:*:*:*
cpe:2.3:o:cisco:asyncos:11.8.1-023:*:*:*:*:*:*:*
cpe:2.3:o:cisco:asyncos:11.8.3-018:*:*:*:*:*:*:*
cpe:2.3:o:cisco:asyncos:11.8.3-021:*:*:*:*:*:*:*
cpe:2.3:o:cisco:asyncos:11.8.4-004:*:*:*:*:*:*:*
cpe:2.3:o:cisco:asyncos:12.0.1-268:*:*:*:*:*:*:*
cpe:2.3:o:cisco:asyncos:12.0.1-334:*:*:*:*:*:*:*
cpe:2.3:o:cisco:asyncos:12.0.2-004:*:*:*:*:*:*:*
cpe:2.3:o:cisco:asyncos:12.0.2-012:*:*:*:*:*:*:*
cpe:2.3:o:cisco:asyncos:12.0.3-005:*:*:*:*:*:*:*
cpe:2.3:o:cisco:asyncos:12.0.3-007:*:*:*:*:*:*:*
cpe:2.3:o:cisco:asyncos:12.0.4-002:*:*:*:*:*:*:*
cpe:2.3:o:cisco:asyncos:12.0.5-011:*:*:*:*:*:*:*

To consult the complete list of CPE names with products and versions, see this page


References to Advisories, Solutions, and Tools