Evidence dossier

CVE-2018-0296

CVE-2018-0296

72.593.7Priority evidence range
As known Jul 19, 2026, 5:00 AM UTCgen-56ccdaf9

Normalized restatement

A vulnerability in the web interface of the Cisco Adaptive Security Appliance (ASA) could allow an unauthenticated, remote attacker to cause an affected device to reload unexpectedly, resulting in a denial of service (DoS) condition. It is also possible on certain software releases that the ASA will not reload, but an attacker could view sensitive system information without authentication by using directory traversal techniques. The vulnerability is due to lack of proper input validation of the HTTP URL. An attacker could exploit this vulnerability by sending a crafted HTTP request to an affected device. An exploit could allow the attacker to cause a DoS condition or unauthenticated disclosure of information. This vulnerability applies to IPv4 and IPv6 HTTP traffic. This vulnerability affects Cisco ASA Software and Cisco Firepower Threat Defense (FTD) Software that is running on the following Cisco products: 3000 Series Industrial Security Appliance (ISA), ASA 1000V Cloud Firewall, ASA 5500 Series Adaptive Security Appliances, ASA 5500-X Series Next-Generation Firewalls, ASA Services Module for Cisco Catalyst 6500 Series Switches and Cisco 7600 Series Routers, Adaptive Security Virtual Appliance (ASAv), Firepower 2100 Series Security Appliance, Firepower 4100 Series Security Appliance, Firepower 9300 ASA Security Module, FTD Virtual (FTDv). Cisco Bug IDs: CSCvi16029.

State
PUBLISHED
Published
Jun 7, 2018
Updated
Jan 12, 2026
Evidence coverage
72%
CISA KEVCatalog member

Apply updates per vendor instructions.

FIRST EPSS99.90%

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

A vulnerability in the web interface of the Cisco Adaptive Security Appliance (ASA) could allow an unauthenticated, remote attacker to cause an affected device to reload unexpectedly, resulting in a denial of service (DoS) condition. It is also possible on certain software releases that the ASA will not reload, but an attacker could view sensitive system information without authentication by using directory traversal techniques. The vulnerability is due to lack of proper input validation of the HTTP URL. An attacker could exploit this vulnerability by sending a crafted HTTP request to an affected device. An exploit could allow the attacker to cause a DoS condition or unauthenticated disclosure of information. This vulnerability applies to IPv4 and IPv6 HTTP traffic. This vulnerability affects Cisco ASA Software and Cisco Firepower Threat Defense (FTD) Software that is running on the following Cisco products: 3000 Series Industrial Security Appliance (ISA), ASA 1000V Cloud Firewall, ASA 5500 Series Adaptive Security Appliances, ASA 5500-X Series Next-Generation Firewalls, ASA Services Module for Cisco Catalyst 6500 Series Switches and Cisco 7600 Series Routers, Adaptive Security Virtual Appliance (ASAv), Firepower 2100 Series Security Appliance, Firepower 4100 Series Security Appliance, Firepower 9300 ASA Security Module, FTD Virtual (FTDv). Cisco Bug IDs: CSCvi16029.

CVEderivative copy
container

CVE Program Container

CISA KEVoriginal assertion
observed_exploitation

Cisco Adaptive Security Appliance (ASA) Denial-of-Service Vulnerability

FIRST EPSSoriginal assertion
model_probability

Probability 0.999030000000; percentile 0.999660000000

Applicability

Cited product scope

Trace impact →
n/aCisco Adaptive Security Appliance unknown
[{"status": "affected", "version": "Cisco Adaptive Security Appliance unknown"}]unknown
Unknown vendorUnknown product
cpe:2.3:a:cisco:firepower_threat_defense:*:*:*:*:*:*:*:*; start including 6.0; end excluding 6.1.0supported
Unknown vendorUnknown product
cpe:2.3:a:cisco:firepower_threat_defense:*:*:*:*:*:*:*:*; start including 6.2.1; end excluding 6.2.2.3supported
Unknown vendorUnknown product
cpe:2.3:a:cisco:firepower_threat_defense:6.2.3:*:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:a:cisco:firepower_threat_defense:6.2.3.1:*:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:a:cisco:firepower_threat_defense:6.2.3-85.02:*:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:a:cisco:firepower_threat_defense:6.2.3-851:*:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:o:cisco:adaptive_security_appliance_software:*:*:*:*:*:*:*:*; start including 9.1; end excluding 9.1.7.29supported
Unknown vendorUnknown product
cpe:2.3:o:cisco:adaptive_security_appliance_software:*:*:*:*:*:*:*:*; start including 9.2; end excluding 9.2.4.33supported
Unknown vendorUnknown product
cpe:2.3:o:cisco:adaptive_security_appliance_software:*:*:*:*:*:*:*:*; start including 9.3; end excluding 9.4.4.18supported
Unknown vendorUnknown product
cpe:2.3:o:cisco:adaptive_security_appliance_software:*:*:*:*:*:*:*:*; start including 9.5; end excluding 9.6.4.8supported
Unknown vendorUnknown product
cpe:2.3:o:cisco:adaptive_security_appliance_software:*:*:*:*:*:*:*:*; start including 9.7; end excluding 9.7.1.24supported
Unknown vendorUnknown product
cpe:2.3:o:cisco:adaptive_security_appliance_software:*:*:*:*:*:*:*:*; start including 9.8; end excluding 9.8.2.28supported
Unknown vendorUnknown product
cpe:2.3:o:cisco:adaptive_security_appliance_software:*:*:*:*:*:*:*:*; start including 9.9; end excluding 9.9.2.1supported

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:N/I:N/A:H
5.0
nvd@nist.govCVSS 2.0 · role PrimaryAV:N/AC:L/Au:N/C:N/I:N/A:P
7.5
134c704f-9b21-4f2e-91b3-4a467353bcc0CVSS 3.1 · role SecondaryCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
7.5
CISA-ADPCVSS 3.1 · role unknownCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

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.