CVE-2020-3452Cisco Adaptive Security Appliance Software and Firepower Threat Defense Software Web Services Read-Only Path Traversal Vulnerability
Updated under an hour ago ()
Does this affect you?
It affects Cisco Adaptive Security Appliance (ASA) Software and 2 other products. Add what you run to find out whether that includes you.
CISA lists it as known exploited since Nov 3, 2021; federal agencies had to remediate by May 3, 2022. Treat that date as your deadline.
Do this next
Free account, 1 product
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 conduct directory traversal attacks and read sensitive files on a targeted system. The vulnerability is due to a lack of proper input validation of URLs in HTTP requests processed by an affected device. An attacker could exploit this vulnerability by sending a crafted HTTP request containing directory traversal character sequences to an affected device. A successful exploit could allow the attacker to view arbitrary files within the web services file system on the targeted device. The web services file system is enabled when the affected device is configured with either WebVPN or AnyConnect features. This vulnerability cannot be used to obtain access to ASA or FTD system files or underlying operating system (OS) files.
- CVSS
- 7.5 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
- Weakness (CWE)
- CWE-20
- Known exploited
- Added to CISA KEV Nov 3, 2021; federal remediation due May 3, 2022Apply updates per vendor instructions.
- EPSS (exploitation in the next 30 days)
- 99.99% (percentile 100)
- Assigned by
- cisco
- NVD analysis
- Analyzed
- Record last updated
- Oct 21, 2025
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Cisco Cisco Adaptive Security Appliance (ASA) Software cisco:adaptive_security_appliance_asa_software (from the name) | from unspecified before 9.6.4.42; from unspecified before 9.8.4.20; from unspecified before 9.9.2.74; from unspecified before 9.10.1.42; from unspecified before 9.13.1.10; from unspecified before 9.14.1.10 | CNA record |
cisco adaptive_security_appliance_software cisco:adaptive_security_appliance_software | from 9.6 before 9.6.4.42; from 9.8 before 9.8.4.20; from 9.9 before 9.9.2.74; from 9.10 before 9.10.1.42; from 9.12 before 9.12.3.12; from 9.13 before 9.13.1.10; from 9.14 before 9.14.1.10 | NVD |
cisco secure_firewall_threat_defense cisco:secure_firewall_threat_defense | from 6.2.3 before 6.2.3.16; from 6.3.0 before 6.3.0.6; from 6.4.0 before 6.4.0.10; from 6.5.0 before 6.5.0.5; from 6.6.0 before 6.6.0.1 | NVD |
References
- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asaftd-ro-path-KJuQhB86vendor-advisory, x-refsource-cisco
- http://packetstormsecurity.com/files/158646/Cisco-ASA-FTD-Remote-File-Disclosure.htmlx-refsource-misc, third-party-advisory, vdb-entry
- http://packetstormsecurity.com/files/158647/Cisco-Adaptive-Security-Appliance-Software-9.11-Local-File-Inclusion.htmlx-refsource-misc, exploit, third-party-advisory, vdb-entry
- http://packetstormsecurity.com/files/159523/Cisco-ASA-FTD-9.6.4.42-Path-Traversal.htmlx-refsource-misc, exploit, third-party-advisory, vdb-entry
- http://packetstormsecurity.com/files/160497/Cisco-ASA-9.14.1.10-FTD-6.6.0.1-Path-Traversal.htmlx-refsource-misc, exploit, third-party-advisory, vdb-entry
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-3452us-government-resource
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.