AEGLIX vulnerability intelligence
CVE-2020-3259
HIGH · CVSS 7.5 · Analyzed
Published: 2020-05-06 · Updated: 2026-08-12 · Source: NVD
Vulnerability overview
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.
Severity and scoring
- CVSS score
- 7.5 · HIGH
- CVSS version
- 3.1
- CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
- Weaknesses
- CWE-200, NVD-CWE-noinfo
CVSS measures technical severity; it does not establish whether this vulnerability is being exploited in your environment.
Known exploitation and remediation
Listed in CISA’s Known Exploited Vulnerabilities catalog.
- Affected product
- Cisco · Adaptive Security Appliance (ASA) and Firepower Threat Defense (FTD)
- Added to catalog
- 2024-02-15
- Required action
- Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
- CISA remediation due date
- 2024-03-07
CISA deadlines apply to the organizations covered by its directives. Confirm your own remediation requirements.
Verify affected versions and patch availability in the vendor advisory before making changes.
Affected products and versions
cpe:2.3:a:cisco:secure_firewall_threat_defense:*:*:*:*:*:*:*:*
From (inclusive): 6.2.3
Before (exclusive): 6.2.3.16
cpe:2.3:a:cisco:secure_firewall_threat_defense:*:*:*:*:*:*:*:*
From (inclusive): 6.3.0
Before (exclusive): 6.3.0.6
cpe:2.3:a:cisco:secure_firewall_threat_defense:*:*:*:*:*:*:*:*
From (inclusive): 6.4.0
Before (exclusive): 6.4.0.9
cpe:2.3:a:cisco:secure_firewall_threat_defense:*:*:*:*:*:*:*:*
From (inclusive): 6.5.0
Before (exclusive): 6.5.0.5
cpe:2.3:o:cisco:adaptive_security_appliance_software:*:*:*:*:*:*:*:*
From (inclusive): 9.8
Before (exclusive): 9.8.4.20
cpe:2.3:o:cisco:adaptive_security_appliance_software:*:*:*:*:*:*:*:*
From (inclusive): 9.9
Before (exclusive): 9.9.2.67
cpe:2.3:o:cisco:adaptive_security_appliance_software:*:*:*:*:*:*:*:*
From (inclusive): 9.10
Before (exclusive): 9.10.1.40
cpe:2.3:o:cisco:adaptive_security_appliance_software:*:*:*:*:*:*:*:*
From (inclusive): 9.12
Before (exclusive): 9.12.3.9
cpe:2.3:o:cisco:adaptive_security_appliance_software:*:*:*:*:*:*:*:*
From (inclusive): 9.13
Before (exclusive): 9.13.1.10
These are NVD CPE applicability entries. Some products depend on configuration conditions; consult the official record to confirm applicability.
Advisories and references
- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asaftd-info-disclose-9eJtycMB
Vendor Advisory
- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asaftd-info-disclose-9eJtycMB
Vendor Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-3259
US Government Resource