CASCACascade Atlas

Evidence dossier

CVE-2020-3452

Cisco Adaptive Security Appliance Software and Firepower Threat Defense Software Web Services Read-Only Path Traversal Vulnerability

72.5–93.7Priority evidence range
As known Jul 19, 2026, 5:00 AM UTCgen-56ccdaf9

Normalized restatement

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.

State
PUBLISHED
Published
Jul 22, 2020
Updated
Oct 21, 2025
Evidence coverage
72%
CISA KEVCatalog member

Apply updates per vendor instructions.

FIRST EPSS99.99%

2026-07-18 · v2026.06.15 · percentile 100.0%

Source stateConflict visible

Distinct CVSS assessments remain side by side; none are averaged.

Source comparison

Who said what

CISA-ADPindependent enrichment
container

CISA ADP Vulnrichment

ciscooriginal assertion
container

Cisco Adaptive Security Appliance Software and Firepower Threat Defense Software Web Services Read-Only Path Traversal Vulnerability

CVEderivative copy
container

CVE Program Container

CISA KEVoriginal assertion
observed_exploitation

Cisco ASA and FTD Read-Only Path Traversal Vulnerability

FIRST EPSSoriginal assertion
model_probability

Probability 0.999920000000; percentile 0.999860000000

Applicability

Cited product scope

Trace impact →
CiscoCisco Adaptive Security Appliance (ASA) Software
[{"status": "affected", "version": "unspecified", "lessThan": "9.6.4.42", "versionType": "custom"}, {"status": "affected", "version": "unspecified", "lessThan": "9.8.4.20", "versionType": "custom"}, {"status": "affected", "version": "unspecified", "lessThan": "9.9.2.74", "versionType": "custom"}, {"status": "affected", "version": "unspecified", "lessThan": "9.10.1.42", "versionType": "custom"}, {"status": "affected", "version": "unspecified", "lessThan": "9.13.1.10", "versionType": "custom"}, {"status": "affected", "version": "unspecified", "lessThan": "9.14.1.10", "versionType": "custom"}]unknown
Unknown vendorUnknown product
cpe:2.3:a:cisco:firepower_threat_defense:*:*:*:*:*:*:*:*; start including 6.2.3; end excluding 6.2.3.16supported
Unknown vendorUnknown product
cpe:2.3:a:cisco:firepower_threat_defense:*:*:*:*:*:*:*:*; start including 6.3.0; end excluding 6.3.0.6supported
Unknown vendorUnknown product
cpe:2.3:a:cisco:firepower_threat_defense:*:*:*:*:*:*:*:*; start including 6.4.0; end excluding 6.4.0.10supported
Unknown vendorUnknown product
cpe:2.3:a:cisco:firepower_threat_defense:*:*:*:*:*:*:*:*; start including 6.5.0; end excluding 6.5.0.5supported
Unknown vendorUnknown product
cpe:2.3:a:cisco:firepower_threat_defense:*:*:*:*:*:*:*:*; start including 6.6.0; end excluding 6.6.0.1supported
Unknown vendorUnknown product
cpe:2.3:h:cisco:asa_5505:-:*:*:*:*:*:*:*constrained
Unknown vendorUnknown product
cpe:2.3:h:cisco:asa_5510:-:*:*:*:*:*:*:*constrained
Unknown vendorUnknown product
cpe:2.3:h:cisco:asa_5512-x:-:*:*:*:*:*:*:*constrained
Unknown vendorUnknown product
cpe:2.3:h:cisco:asa_5515-x:-:*:*:*:*:*:*:*constrained
Unknown vendorUnknown product
cpe:2.3:h:cisco:asa_5520:-:*:*:*:*:*:*:*constrained
Unknown vendorUnknown product
cpe:2.3:h:cisco:asa_5525-x:-:*:*:*:*:*:*:*constrained
Unknown vendorUnknown product
cpe:2.3:h:cisco:asa_5540:-:*:*:*:*:*:*:*constrained
Unknown vendorUnknown product
cpe:2.3:h:cisco:asa_5545-x:-:*:*:*:*:*:*:*constrained
Unknown vendorUnknown product
cpe:2.3:h:cisco:asa_5550:-:*:*:*:*:*:*:*constrained
Unknown vendorUnknown product
cpe:2.3:h:cisco:asa_5555-x:-:*:*:*:*:*:*:*constrained
Unknown vendorUnknown product
cpe:2.3:h:cisco:asa_5580:-:*:*:*:*:*:*:*constrained
Unknown vendorUnknown product
cpe:2.3:h:cisco:asa_5585-x:-:*:*:*:*:*:*:*constrained
Unknown vendorUnknown product
cpe:2.3:o:cisco:adaptive_security_appliance_software:*:*:*:*:*:*:*:*; start including 9.6; end excluding 9.6.4.42supported
Unknown vendorUnknown product
cpe:2.3:o:cisco:adaptive_security_appliance_software:*:*:*:*:*:*:*:*; start including 9.8; end excluding 9.8.4.20supported
Unknown vendorUnknown product
cpe:2.3:o:cisco:adaptive_security_appliance_software:*:*:*:*:*:*:*:*; start including 9.9; end excluding 9.9.2.74supported
Unknown vendorUnknown product
cpe:2.3:o:cisco:adaptive_security_appliance_software:*:*:*:*:*:*:*:*; start including 9.10; end excluding 9.10.1.42supported
Unknown vendorUnknown product
cpe:2.3:o:cisco:adaptive_security_appliance_software:*:*:*:*:*:*:*:*; start including 9.12; end excluding 9.12.3.12supported
Unknown vendorUnknown product
cpe:2.3:o:cisco:adaptive_security_appliance_software:*:*:*:*:*:*:*:*; start including 9.13; end excluding 9.13.1.10supported
Unknown vendorUnknown product
cpe:2.3:o:cisco:adaptive_security_appliance_software:*:*:*:*:*:*:*:*; start including 9.14; end excluding 9.14.1.10supported

Assessments

CVSS by origin

7.5
nvd@nist.govCVSS 3.1 · role PrimaryCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
5.0
nvd@nist.govCVSS 2.0 · role PrimaryAV:N/AC:L/Au:N/C:P/I:N/A:N
7.5
psirt@cisco.comCVSS 3.1 · role SecondaryCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
7.5
ciscoCVSS 3.1 · role unknownCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Limitations and unknowns

  • KEV membership is authoritative for the catalog, not proof of exposure in any environment.
  • EPSS is a dated model probability and not an individual-environment prediction.
  • Affected or fixed status applies only to the exact cited product and version scope; unresolved scope remains unknown.
  • NVD-carried upstream facts remain derivative and are not independent corroboration.
  • Only NVD metrics validated under the generation-bound calculator are Public Priority eligible; direct CVE record metrics remain display-only.
  • NVD CVSS source eligibility is closed: NVD-authored, exact record-source, or registered same-CVE container origin; unmapped sources remain display-only.
  • Factor D is unknown in Public Core because no accepted canonical mapping-obligation ledger is present.
  • Core replay supports the active and immediately prior generation; retrospective valid-at replay is deferred.