CVE-2020-3259
Cisco ASA and FTD Information Disclosure Vulnerability
Summary
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.
Affected software
Vendor: Cisco · Product: Adaptive Security Appliance (ASA) and Firepower Threat Defense (FTD)
Weakness types (CWE):
What to do
This vulnerability appears in CISA's Known Exploited Vulnerabilities catalog, meaning it is being exploited in the wild. Prioritize patching affected systems and verify exposure across your estate.
Related vulnerabilities in Cisco
| CVE | Name | EPSS | Exploited |
|---|---|---|---|
| CVE-2021-1498 | Cisco HyperFlex HX Data Platform Command Injection Vulnerability | 100.0% | Yes |
| CVE-2020-3452 | Cisco ASA and FTD Read-Only Path Traversal Vulnerability | 100.0% | Yes |
| CVE-2021-1497 | Cisco HyperFlex HX Installer Virtual Machine Command Injection Vulnerability | 99.9% | Yes |
| CVE-2018-0296 | Cisco Adaptive Security Appliance (ASA) Denial-of-Service Vulnerability | 99.9% | Yes |
| CVE-2019-1653 | Cisco Small Business RV320 and RV325 Routers Information Disclosure Vulnerabilit | 99.9% | Yes |
| CVE-2023-20198 | Cisco IOS XE Web UI Privilege Escalation Vulnerability | 99.6% | Yes |
| CVE-2018-0171 | Cisco IOS and IOS XE Software Smart Install Remote Code Execution Vulnerability | 99.5% | Yes |
| CVE-2017-3881 | Cisco IOS and IOS XE Remote Code Execution Vulnerability | 99.0% | Yes |
Is your domain exposed?
Run a free, instant security report for any domain — exposure score, email auth, TLS and breach metadata.
Get your free reportAll information is aggregated from public sources for awareness only and does not constitute an accusation or a security assessment. No personal data or credentials are published.