CVE-2026-20024
published 2026-03-04CVE-2026-20024: A vulnerability in the OSPF protocol of Cisco Secure Firewall ASA Software and Cisco Secure FTD Software could allow an authenticated, adjacent attacker to…
PriorityP427medium5.7CVSS 3.1
AVAACLPRLUINSUCNINAH
EPSS
0.19%
8.5th percentile
A vulnerability in the OSPF protocol of Cisco Secure Firewall ASA Software and Cisco Secure FTD Software could allow an authenticated, adjacent attacker to cause an affected device to reload unexpectedly, resulting in a DoS condition. To exploit this vulnerability, the attacker must have the OSPF secret key.
This vulnerability is due to heap corruption in OSPF when parsing packets. An attacker could exploit this vulnerability by sending crafted packets to the OSPF service. A successful exploit could allow the attacker to corrupt the heap, causing the affected device to reload, resulting in a DoS condition.
Affected
419 ranges· showing 25
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| cisco | adaptive_security_appliance_software | — | — |
| cisco | adaptive_security_appliance_software | — | — |
| cisco | adaptive_security_appliance_software | — | — |
| cisco | adaptive_security_appliance_software | — | — |
| cisco | adaptive_security_appliance_software | — | — |
| cisco | adaptive_security_appliance_software | — | — |
| cisco | adaptive_security_appliance_software | — | — |
| cisco | adaptive_security_appliance_software | — | — |
| cisco | adaptive_security_appliance_software | — | — |
| cisco | adaptive_security_appliance_software | — | — |
| cisco | adaptive_security_appliance_software | — | — |
| cisco | adaptive_security_appliance_software | — | — |
| cisco | adaptive_security_appliance_software | — | — |
| cisco | adaptive_security_appliance_software | — | — |
| cisco | adaptive_security_appliance_software | — | — |
| cisco | adaptive_security_appliance_software | — | — |
| cisco | adaptive_security_appliance_software | — | — |
| cisco | adaptive_security_appliance_software | — | — |
| cisco | adaptive_security_appliance_software | — | — |
| cisco | adaptive_security_appliance_software | — | — |
| cisco | adaptive_security_appliance_software | — | — |
| cisco | adaptive_security_appliance_software | — | — |
| cisco | adaptive_security_appliance_software | — | — |
| cisco | adaptive_security_appliance_software | — | — |
| cisco | adaptive_security_appliance_software | — | — |
CVSS provenance
nvdv3.15.7MEDIUMCVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
vendor_cisco6.8MEDIUM
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Cisco
Cisco Secure Firewall Adaptive Security Appliance and Secure Firewall Threat Defense Software OSPF Protocol Vulnerabilities
vendor_cisco·2026-03-04·CVSS 6.8
CVE-2026-20020 [MEDIUM] CWE-119 Cisco Secure Firewall Adaptive Security Appliance and Secure Firewall Threat Defense Software OSPF Protocol Vulnerabilities
Cisco Secure Firewall Adaptive Security Appliance and Secure Firewall Threat Defense Software OSPF Protocol Vulnerabilities
Multiple vulnerabilities in the OSPF feature of Cisco Secure Firewall Adaptive Security Appliance (ASA) Software and Cisco Secure Firewall Threat Defense (FTD) Software could allow an adjacent attacker to cause the device to reload unexpectedly, resulting in a denial of service (DoS) condition.
For more information about these vulnerabilities, see the Details section of this advisory.
Cisco has released software updates that address these vulnerabilities. There are no workarounds that address these vulnerabilities.
This advisory is available at the following link:https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asaftd-ospf-ZH8Phb
Cisco
Cisco Secure Firewall Adaptive Security Appliance and Secure Firewall Threat Defense Software OSPF Protocol Vulnerabilities
vendor_cisco·CVSS 3.1
CVE-2026-20024 Cisco Secure Firewall Adaptive Security Appliance and Secure Firewall Threat Defense Software OSPF Protocol Vulnerabilities
CVE-2026-20024: Cisco Secure Firewall Adaptive Security Appliance and Secure Firewall Threat Defense Software OSPF Protocol Vulnerabilities
Multiple vulnerabilities in the OSPF feature of Cisco Secure Firewall Adaptive Security Appliance (ASA) Software and Cisco Secure Firewall Threat Defense (FTD) Software could allow an adjacent attacker to cause the device to reload unexpectedly, resulting in a denial of service (DoS) condition. For more information about these vulnerabilities, see the
CVSS: 3.1
CWE: CWE-119, CWE-190, CWE-20, CWE-119, CWE-190, CWE-20, CWE-401, CWE-787, CWE-823, CWE-119, CWE-190, CWE-20, CWE-119, CWE-190, CWE-20, CWE-401, CWE-787, CWE-823
Bug IDs: CSCwn69075, CSCwn69076, CSCwn69078, CSCwn69075, CSCwn69076
GHSA
GHSA-f3vw-6vxw-fwf4: A vulnerability in the OSPF protocol of Cisco Secure Firewall ASA Software and Cisco Secure FTD Software could allow an authenticated, adjacent attack
ghsa_unreviewed·2026-03-04
CVE-2026-20024 [MEDIUM] CWE-119 GHSA-f3vw-6vxw-fwf4: A vulnerability in the OSPF protocol of Cisco Secure Firewall ASA Software and Cisco Secure FTD Software could allow an authenticated, adjacent attack
A vulnerability in the OSPF protocol of Cisco Secure Firewall ASA Software and Cisco Secure FTD Software could allow an authenticated, adjacent attacker to cause an affected device to reload unexpectedly, resulting in a DoS condition. To exploit this vulnerability, the attacker must have the OSPF secret key.
This vulnerability is due to heap corruption in OSPF when parsing packets. An attacker could exploit this vulnerability by sending crafted packets to the OSPF service. A successful exploit could allow the attacker to corrupt the heap, causing the affected device to reload, resulting in a DoS condition.
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
2026-03-04
Published