CVE-2019-1695 json
Cisco Adaptive Security Appliance and Firepower Threat Defense Software Layer 2 Filtering Bypass Vulnerability
published 2019-05-03 7 y ago modified 2026-08-11 2 mo ago also EUVD-2019-10252
- cvss
- 4.3
- version 3.0, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.7%
- EPSS 0.7% chance of exploitation in 30 days, percentile 53%
- public exploits
- 0
- none known
Summary
A vulnerability in the detection engine of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, adjacent attacker to send data directly to the kernel of an affected device. The vulnerability exists because the software improperly filters Ethernet frames sent to an affected device. An attacker could exploit this vulnerability by sending crafted packets to the management interface of an affected device. A successful exploit could allow the attacker to bypass the Layer 2 (L2) filters and send data directly to the kernel of the affected device. A malicious frame successfully delivered would make the target device generate a specific syslog entry.
Patch / fix
- Cisco Cisco Adaptive Security Appliance (ASA) Software 9.8.4, 9.9.2.50, 9.10.1.17
- Cisco Cisco Firepower Threat Defense (FTD) Software 6.2.3.12, 6.3.0.3
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 23 mo ago
Exploit prediction
0.71% chance of exploitation in the next 30 days, higher than 53% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.0 | 4.3 | CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N |
| NVD | 3.1 | 6.5 | CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N |
| NVD | 2.0 | 6.1 | AV:A/AC:L/Au:N/C:N/I:C/A:N |
Affected products
- Cisco Cisco Adaptive Security Appliance (ASA) Software
- Cisco Cisco Firepower Threat Defense (FTD) Software
Classification
- Weakness
-
- CWE-284 Improper Access Control
References
-
tools.cisco.com
/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190501-asa-ftd-bypass
vendor-advisory
-
securityfocus.com
/bid/108173
vdb-entry, third-party-advisory
Sources
- CVE List CVE-2019-1695
- NVD CVE-2019-1695
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.