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CVE-2020-3452

98
FAUCET Score

CVE-2020-3452 is a directory traversal vulnerability in Cisco Adaptive Security Appliance (ASA) and Firepower Threat Defense (FTD) Software, specifically within their web services interface. This high-severity vulnerability (CVSS 7.5) allows an unauthenticated, remote attacker to read sensitive files from the web services file system due to improper input validation in HTTP requests. While it cannot access core OS files, its ease of exploitation (low attack complexity, no user interaction) makes it critical. This CVE is actively exploited in the wild, with multiple public exploit codes available and significant community and media attention, indicating a high risk of compromise.

Impacted Technologies

VendorProductVersion(s)CPE
>= 9.6, < 9.6.4.42CPE matchmatch criteria
cpe:2.3:o:cisco:adaptive_security_appliance_software:*:*:*:*:*:*:*:*
>= 9.8, < 9.8.4.20CPE matchmatch criteria
cpe:2.3:o:cisco:adaptive_security_appliance_software:*:*:*:*:*:*:*:*
>= 9.9, < 9.9.2.74CPE matchmatch criteria
cpe:2.3:o:cisco:adaptive_security_appliance_software:*:*:*:*:*:*:*:*
>= 9.10, < 9.10.1.42CPE matchmatch criteria
cpe:2.3:o:cisco:adaptive_security_appliance_software:*:*:*:*:*:*:*:*
>= 9.12, < 9.12.3.12CPE matchmatch criteria
cpe:2.3:o:cisco:adaptive_security_appliance_software:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.5HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
99.99%
Probability of exploitation in next 30 days
EPSS Percentile
100.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
Added to KEV · Nov 3, 2021
Nuclei: CVE-2020-3452 · Jul 23, 2020
ExploitDB: EDB-49262 · Dec 15, 2020
This CVE's current EPSS score of 0.9999 is in the 100th percentile among its peer group of 51,485 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Patches (1)

ciscovendor investigatingvia nvd_reference
View patch

References

cisa.gov / known-exploited-vulnerabilities-catalog
US Government Resource
packetstormsecurity.com / files/158646/Cisco-ASA-FTD-Remote-File-Disclosure.html
Third Party AdvisoryVDB Entry
packetstormsecurity.com / files/158647/Cisco-Adaptive-Security-Appliance-Software-9.11-Local-File-Inclusion.html
ExploitThird Party AdvisoryVDB Entry
packetstormsecurity.com / files/159523/Cisco-ASA-FTD-9.6.4.42-Path-Traversal.html
ExploitThird Party AdvisoryVDB Entry
packetstormsecurity.com / files/160497/Cisco-ASA-9.14.1.10-FTD-6.6.0.1-Path-Traversal.html
ExploitThird Party AdvisoryVDB Entry
tools.cisco.com / security/center/content/CiscoSecurityAdvisory/cisco-sa-asaftd-ro-path-KJuQhB86
Vendor Advisory