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Evidence dossier
CVE-2018-0296
CVE-2018-0296
gen-56ccdaf9Normalized 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%
2026-07-18 · v2026.06.15 · percentile 100.0%
Distinct CVSS assessments remain side by side; none are averaged.
Source comparison
Who said what
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.
Cisco Adaptive Security Appliance (ASA) Denial-of-Service Vulnerability
Probability 0.999030000000; percentile 0.999660000000
Applicability
Cited product scope
[{"status": "affected", "version": "Cisco Adaptive Security Appliance unknown"}]unknowncpe:2.3:a:cisco:firepower_threat_defense:*:*:*:*:*:*:*:*; start including 6.0; end excluding 6.1.0supportedcpe:2.3:a:cisco:firepower_threat_defense:*:*:*:*:*:*:*:*; start including 6.2.1; end excluding 6.2.2.3supportedcpe:2.3:a:cisco:firepower_threat_defense:6.2.3:*:*:*:*:*:*:*supportedcpe:2.3:a:cisco:firepower_threat_defense:6.2.3.1:*:*:*:*:*:*:*supportedcpe:2.3:a:cisco:firepower_threat_defense:6.2.3-85.02:*:*:*:*:*:*:*supportedcpe:2.3:a:cisco:firepower_threat_defense:6.2.3-851:*:*:*:*:*:*:*supportedcpe:2.3:o:cisco:adaptive_security_appliance_software:*:*:*:*:*:*:*:*; start including 9.1; end excluding 9.1.7.29supportedcpe:2.3:o:cisco:adaptive_security_appliance_software:*:*:*:*:*:*:*:*; start including 9.2; end excluding 9.2.4.33supportedcpe:2.3:o:cisco:adaptive_security_appliance_software:*:*:*:*:*:*:*:*; start including 9.3; end excluding 9.4.4.18supportedcpe:2.3:o:cisco:adaptive_security_appliance_software:*:*:*:*:*:*:*:*; start including 9.5; end excluding 9.6.4.8supportedcpe:2.3:o:cisco:adaptive_security_appliance_software:*:*:*:*:*:*:*:*; start including 9.7; end excluding 9.7.1.24supportedcpe:2.3:o:cisco:adaptive_security_appliance_software:*:*:*:*:*:*:*:*; start including 9.8; end excluding 9.8.2.28supportedcpe:2.3:o:cisco:adaptive_security_appliance_software:*:*:*:*:*:*:*:*; start including 9.9; end excluding 9.9.2.1supportedAssessments
CVSS by origin
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HAV:N/AC:L/Au:N/C:N/I:N/A:PCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HLimitations 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.