CVE-2020-3259

high Cisco ⚠️ CISA KEV — Exploited in the Wild
CVSS v3 Base Score
7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
EPSS Score
69.3%
Exploitation probability in 30 days
Top 1% most likely to be exploited
Attack Characteristics
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Confidentiality
High
Integrity
None
Availability
None
Published: May 6, 2020 (2314 days ago)
Last Modified: August 12, 2026
Vendor: Cisco
Source: NVD

⚠️ CISA Known Exploited Vulnerability

Added to KEV: 2024-02-15
Remediation Due: 2024-03-07 (⚠ 913d overdue)
Ransomware Campaign: Known

Description

A vulnerability in the web services interface of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to retrieve memory contents on an affected device, which could lead to the disclosure of confidential information. The vulnerability is due to a buffer tracking issue when the software parses invalid URLs that are requested from the web services interface. An attacker could exploit this vulnerability by sending a crafted GET request to the web services interface. A successful exploit could allow the attacker to retrieve memory contents, which could lead to the disclosure of confidential information. Note: This vulnerability affects only specific AnyConnect and WebVPN configurations. For more information, see the Vulnerable Products section.

CWE

CWE-200

Affected Products

cisco secure firewall threat defensecisco adaptive security appliance software

References

🔗 tools.cisco.com 🔗 tools.cisco.com 🔗 www.cisa.gov