CVE-2026-20020 (GCVE-0-2026-20020)
Vulnerability from cvelistv5
Published
2026-03-04 18:34
Modified
2026-03-04 21:32
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-20 - Improper Input Validation
Summary
A vulnerability in the OSPF protocol of Cisco Secure Firewall ASA Software and Cisco Secure FTD Software could allow an unauthenticated, adjacent attacker to cause an affected device to reload unexpectedly, resulting in a DoS condition. If OSPF authentication is enabled, the attacker must know the secret key to exploit this vulnerability.
This vulnerability is due to insufficient input validation when processing OSPF update packets. An attacker could exploit this vulnerability by sending crafted OSPF update packets. A successful exploit could allow the attacker to create a buffer overflow, causing the affected device to reload, resulting in a DoS condition.
References
Impacted products
| Vendor | Product | Version | |||||||
|---|---|---|---|---|---|---|---|---|---|
| Cisco | Cisco Secure Firewall Adaptive Security Appliance (ASA) Software |
Version: 9.12.1 Version: 9.12.1.2 Version: 9.12.1.3 Version: 9.12.2 Version: 9.12.2.4 Version: 9.12.2.5 Version: 9.12.2.9 Version: 9.12.3 Version: 9.12.3.2 Version: 9.12.3.7 Version: 9.12.4 Version: 9.12.3.12 Version: 9.12.3.9 Version: 9.12.2.1 Version: 9.12.4.2 Version: 9.12.4.4 Version: 9.12.4.7 Version: 9.12.4.10 Version: 9.12.4.13 Version: 9.12.4.8 Version: 9.12.4.18 Version: 9.12.4.24 Version: 9.12.4.26 Version: 9.12.4.29 Version: 9.12.4.30 Version: 9.12.4.35 Version: 9.12.4.37 Version: 9.12.4.38 Version: 9.12.4.39 Version: 9.12.4.40 Version: 9.12.4.41 Version: 9.12.4.47 Version: 9.12.4.48 Version: 9.12.4.50 Version: 9.12.4.52 Version: 9.12.4.54 Version: 9.12.4.55 Version: 9.12.4.56 Version: 9.12.4.58 Version: 9.12.4.62 Version: 9.12.4.65 Version: 9.12.4.67 Version: 9.16.1 Version: 9.16.1.28 Version: 9.16.2 Version: 9.16.2.3 Version: 9.16.2.7 Version: 9.16.2.11 Version: 9.16.2.13 Version: 9.16.2.14 Version: 9.16.3 Version: 9.16.3.3 Version: 9.16.3.14 Version: 9.16.3.15 Version: 9.16.3.19 Version: 9.16.3.23 Version: 9.16.4 Version: 9.16.4.9 Version: 9.16.4.14 Version: 9.16.4.19 Version: 9.16.4.27 Version: 9.16.4.38 Version: 9.16.4.39 Version: 9.16.4.42 Version: 9.16.4.48 Version: 9.16.4.55 Version: 9.16.4.57 Version: 9.16.4.61 Version: 9.16.4.62 Version: 9.16.4.67 Version: 9.16.4.70 Version: 9.16.4.71 Version: 9.16.4.76 Version: 9.16.4.82 Version: 9.16.4.84 Version: 9.16.4.85 Version: 9.17.1 Version: 9.17.1.7 Version: 9.17.1.9 Version: 9.17.1.10 Version: 9.17.1.11 Version: 9.17.1.13 Version: 9.17.1.15 Version: 9.17.1.20 Version: 9.17.1.30 Version: 9.17.1.33 Version: 9.17.1.39 Version: 9.17.1.45 Version: 9.17.1.46 Version: 9.18.1 Version: 9.18.1.3 Version: 9.18.2 Version: 9.18.2.5 Version: 9.18.2.7 Version: 9.18.2.8 Version: 9.18.3 Version: 9.18.3.39 Version: 9.18.3.46 Version: 9.18.3.53 Version: 9.18.3.55 Version: 9.18.3.56 Version: 9.18.4 Version: 9.18.4.5 Version: 9.18.4.8 Version: 9.18.4.22 Version: 9.18.4.24 Version: 9.18.4.29 Version: 9.18.4.34 Version: 9.18.4.40 Version: 9.18.4.47 Version: 9.18.4.50 Version: 9.18.4.52 Version: 9.18.4.53 Version: 9.18.4.57 Version: 9.19.1 Version: 9.19.1.5 Version: 9.19.1.9 Version: 9.19.1.12 Version: 9.19.1.18 Version: 9.19.1.22 Version: 9.19.1.24 Version: 9.19.1.27 Version: 9.19.1.28 Version: 9.19.1.31 Version: 9.19.1.37 Version: 9.19.1.38 Version: 9.19.1.42 Version: 9.20.1 Version: 9.20.1.5 Version: 9.20.2 Version: 9.20.2.10 Version: 9.20.2.21 Version: 9.20.2.22 Version: 9.20.3 Version: 9.20.3.4 Version: 9.20.3.7 Version: 9.20.3.9 Version: 9.20.3.10 Version: 9.20.3.13 Version: 9.20.3.16 Version: 9.20.3.20 Version: 9.22.1.1 Version: 9.22.1.3 Version: 9.22.1.2 Version: 9.22.1.6 Version: 9.22.2 Version: 9.23.1 Version: 9.23.1.3 |
|||||||
|
|||||||||
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}
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If OSPF authentication is enabled, the attacker must know the secret key to exploit this vulnerability.\\r\\n\\r This vulnerability is due to insufficient input validation when processing OSPF update packets. An attacker could exploit this vulnerability by sending crafted OSPF update packets. A successful exploit could allow the attacker to create a buffer overflow, causing the affected device to reload, resulting in a DoS condition.\"}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"cwe\", \"cweId\": \"CWE-20\", \"description\": \"Improper Input Validation\"}]}], \"providerMetadata\": {\"orgId\": \"d1c1063e-7a18-46af-9102-31f8928bc633\", \"shortName\": \"cisco\", \"dateUpdated\": \"2026-03-04T18:34:59.594Z\"}}}",
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"dataType": "CVE_RECORD",
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}
}
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
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