CVE-2019-1695

mediumpriority · track · 26EPSS 0.007 · 53 %ileEURUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

0.71% (53rd) EPSS

CVSS 6.1 · medium

Is it mine?

17 products

Check your exposure

Who says so?

5 sources

cnnvd · enisa_euvd · fstec_bdu · cisco_csaf

EPSS · scored 2026-10-27

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.

remediations

Vendor fix, mitigation, or workaround guidance, as published by each source.

A vendor fix is available.

FixedCisco Secure Firewall Adaptive Security Appliance (ASA) Softwarecisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com
FixedCisco Secure Firewall Threat Defense (FTD) Softwarecisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com

cvss

Technical severity, 0–10. One row per scoring source.

6.5

010

base score 0–10 · higher = more severe · hover a vector to decode

v2.06.1mediumAV:A/AC:L/Au:N/C:N/I:C/A:Nprimary · NVD / NIST USexploitability 6.5 · impact 6.9

v3.16.5mediumCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:Nprimary · NVD / NIST USexploitability 2.8 · impact 3.6

v3.04.3mediumCVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:Nsecondary · ENISA EU

v3.04.3mediumCVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:Nsecondary · psirt@cisco.com USexploitability 2.8 · impact 1.4

v3.04.3mediumCVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:Nsecondary · Cisco PSIRT US

v3.14.3mediumAV:A/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:Nsecondary · FSTEC (BDU) RU

v3.16mediumCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N/E:Usecondary · CVSS-BT (t0sche)

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Trackcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-284USCWE-284US

affected products (17)

Products and version ranges known to be affected.

Cisco Cisco Secure Firewall Adaptive Security Appliance (ASA) Softwareall versionscisco_csafUS
Cisco Cisco Secure Firewall Threat Defense (FTD) Softwareall versionscisco_csafUS
Cisco Cisco Adaptive Security Appliance (ASA) Softwareunspecified → 9.10.1.17enisa_euvdEU
Cisco Cisco Adaptive Security Appliance (ASA) Softwareunspecified → 9.8.4enisa_euvdEU
Cisco Cisco Adaptive Security Appliance (ASA) Softwareunspecified → 9.9.2.50enisa_euvdEU
Cisco Cisco Firepower Threat Defense (FTD) Softwareunspecified → 6.2.3.12enisa_euvdEU
Cisco Cisco Firepower Threat Defense (FTD) Softwareunspecified → 6.3.0.3enisa_euvdEU
Cisco Systems Inc. Adaptive Security Appliance9.10 → 9.10.1.17fstec_bduRU
Cisco Systems Inc. Adaptive Security Appliance9.8 → 9.8.4fstec_bduRU
Cisco Systems Inc. Adaptive Security Appliance9.9 → 9.9.2.50fstec_bduRU
Cisco Systems Inc. Firepower Threat Defense6.2.1 → 6.2.3.12fstec_bduRU
Cisco Systems Inc. Firepower Threat Defense6.3.0 → 6.3.0.3fstec_bduRU
cisco adaptive security appliance software< 9.8.4nvdUScpe:2.3:a:cisco:adaptive_security_appliance_software:*:*:*:*:*:*:*:*
cisco adaptive security appliance software9.10 → 9.10.1.17nvdUScpe:2.3:o:cisco:adaptive_security_appliance_software:*:*:*:*:*:*:*:*
cisco adaptive security appliance software9.9 → 9.9.2.50nvdUScpe:2.3:o:cisco:adaptive_security_appliance_software:*:*:*:*:*:*:*:*
cisco secure firewall threat defense6.2.1 → 6.2.3.12nvdUScpe:2.3:a:cisco:secure_firewall_threat_defense:*:*:*:*:*:*:*:*
cisco secure firewall threat defense6.3.0 → 6.3.0.3nvdUScpe:2.3:a:cisco:secure_firewall_threat_defense:*:*:*:*:*:*:*:*

advisories (1)

Vendor and ecosystem advisories describing this.

cisco-sa-20190501-asa-ftd-bypassCisco Adaptive Security Appliance and Firepower Threat Defense Software Layer 2 Filtering Bypass Vulnerability2019-05-01csaf · cisco_csafUS
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. Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.

also known as (4)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu cisco_csaf nvd NVD CVE.org MITRE

published 2019-05-03modified 2026-08-11

references (12)

External citations — patches, advisories, analysis.

scry

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