CVE Watch—

CVE-2020-3259

Cisco ASA and FTD Information Disclosure Vulnerability

CVSS

—

No CVSS

EPSS

71.8%

p99

KEV

YES

Feb 15, 2024

Exploit Today

0-100

Published: — · Last modified: —

EPSS · 30d

71.8%EPSS · 30 days71.8%

2026-06-302026-07-16

KEV catalog record

Product

Cisco / Adaptive Security Appliance (ASA) and Firepower Threat Defense (FTD)

Vulnerability

Cisco ASA and FTD Information Disclosure Vulnerability

Added to KEV

Feb 15, 2024

Remediate by

Mar 7, 2024

Known ransomware use

Yes

Summary description

Cisco Adaptive Security Appliance (ASA) and Firepower Threat Defense (FTD) contain an information disclosure vulnerability. An attacker could retrieve memory contents on an affected device, which could lead to the disclosure of confidential information due to a buffer tracking issue when the software parses invalid URLs that are requested from the web services interface. This vulnerability affects only specific AnyConnect and WebVPN configurations.

Required action

Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

Notes

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asaftd-info-disclose-9eJtycMB; https://nvd.nist.gov/vuln/detail/CVE-2020-3259

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