CVE-2019-12676

Cisco Adaptive Security Appliance Software and Firepower Threat Defense Software OSPF LSA Processing Denial of Service Vulnerability

HIGH

7.4

CVSS Score

Published: October 2, 2019 at 07:06 PM UTC

Updated: August 11, 2026 at 07:37 PM UTC

12 products affected across 1 vendorAdaptive Security ApplianceSecure Firewall Threat DefenseASA 5580

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Severity

HIGH7.4

Exploit prediction

EPSS 0.5%

SSVC

No known exploit

Description

A vulnerability in the Open Shortest Path First (OSPF) implementation of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, adjacent attacker to cause a reload of an affected device, resulting in a denial of service (DoS) condition. The vulnerability exists because the affected software improperly parses certain options in OSPF link-state advertisement (LSA) type 11 packets. An attacker could exploit this vulnerability by sending a crafted LSA type 11 OSPF packet to an affected device. A successful exploit could allow the attacker to cause a reload of the affected device, resulting in a DoS condition for client traffic that is traversing the device.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Adaptive Security Appliance · Cisco

95%

v < 9.6.4.349.10 ≤ v < 9.10.1.279.12 ≤ v < 9.12.2.19.7 ≤ v < 9.8.4.89.9 ≤ v < 9.9.2.59

Affected range stops below 9.10.1.27, so it looks safe — our inference, not a vendor statement

Affected range stops below 9.12.2.1, so it looks safe — our inference, not a vendor statement

Affected range stops below 9.6.4.34, so it looks safe — our inference, not a vendor statement

Affected range stops below 9.8.4.8, so it looks safe — our inference, not a vendor statement

Affected range stops below 9.9.2.59, so it looks safe — our inference, not a vendor statement

cisco-asa-5505 (environment) · cisco-asa-5510 (environment) · cisco-asa-5512-x (environment) · cisco-asa-5515-x (environment) · cisco-asa-5520 (environment) · cisco-asa-5525-x (environment) · cisco-asa-5550 (environment) · cisco-asa-5555-x (environment) · cisco-asa-5580 (environment) · cisco-asa-5585-x (environment)

Secure Firewall Threat Defense · Cisco

95%

v < 6.3.0.46.4.0 ≤ v < 6.4.0.4

ASA 5505 · Ciscodevice

80%

All versions

ASA 5510 · Ciscodevice

80%

All versions

Asa 5512-X · Ciscodevice

80%

All versions