CVE-2026-20023 (GCVE-0-2026-20023)
Vulnerability from cvelistv5 – Published: 2026-03-04 18:35 – Updated: 2026-03-04 21:34
VLAI?
Summary
A vulnerability in the OSPF protocol of Cisco Secure Firewall Adaptive Security Appliance (ASA) Software and Cisco Secure Firewall Threat Defense (FTD) Software could allow an unauthenticated, adjacent attacker to corrupt memory on an affected device, resulting in a denial of service (DoS) condition.
This vulnerability is due to memory corruption when parsing OSPF protocol packets. An attacker could exploit this vulnerability by sending crafted OSPF packets to an affected device. A successful exploit could allow the attacker to cause memory corruption causing the affected device to reboot, resulting in a DoS condition.
Severity ?
6.1 (Medium)
CWE
- CWE-787 - Out-of-bounds Write
Assigner
References
Impacted products
| Vendor | Product | Version | |||||||
|---|---|---|---|---|---|---|---|---|---|
| Cisco | Cisco Secure Firewall Adaptive Security Appliance (ASA) Software |
Affected:
9.12.1
Affected: 9.12.1.2 Affected: 9.12.1.3 Affected: 9.12.2 Affected: 9.12.2.4 Affected: 9.12.2.5 Affected: 9.12.2.9 Affected: 9.12.3 Affected: 9.12.3.2 Affected: 9.12.3.7 Affected: 9.12.4 Affected: 9.12.3.12 Affected: 9.12.3.9 Affected: 9.12.2.1 Affected: 9.12.4.2 Affected: 9.12.4.4 Affected: 9.12.4.7 Affected: 9.12.4.10 Affected: 9.12.4.13 Affected: 9.12.4.8 Affected: 9.12.4.18 Affected: 9.12.4.24 Affected: 9.12.4.26 Affected: 9.12.4.29 Affected: 9.12.4.30 Affected: 9.12.4.35 Affected: 9.12.4.37 Affected: 9.12.4.38 Affected: 9.12.4.39 Affected: 9.12.4.40 Affected: 9.12.4.41 Affected: 9.12.4.47 Affected: 9.12.4.48 Affected: 9.12.4.50 Affected: 9.12.4.52 Affected: 9.12.4.54 Affected: 9.12.4.55 Affected: 9.12.4.56 Affected: 9.12.4.58 Affected: 9.12.4.62 Affected: 9.12.4.65 Affected: 9.12.4.67 Affected: 9.16.1 Affected: 9.16.1.28 Affected: 9.16.2 Affected: 9.16.2.3 Affected: 9.16.2.7 Affected: 9.16.2.11 Affected: 9.16.2.13 Affected: 9.16.2.14 Affected: 9.16.3 Affected: 9.16.3.3 Affected: 9.16.3.14 Affected: 9.16.3.15 Affected: 9.16.3.19 Affected: 9.16.3.23 Affected: 9.16.4 Affected: 9.16.4.9 Affected: 9.16.4.14 Affected: 9.16.4.19 Affected: 9.16.4.27 Affected: 9.16.4.38 Affected: 9.16.4.39 Affected: 9.16.4.42 Affected: 9.16.4.48 Affected: 9.16.4.55 Affected: 9.16.4.57 Affected: 9.16.4.61 Affected: 9.16.4.62 Affected: 9.16.4.67 Affected: 9.16.4.70 Affected: 9.16.4.71 Affected: 9.16.4.76 Affected: 9.16.4.82 Affected: 9.16.4.84 Affected: 9.16.4.85 Affected: 9.17.1 Affected: 9.17.1.7 Affected: 9.17.1.9 Affected: 9.17.1.10 Affected: 9.17.1.11 Affected: 9.17.1.13 Affected: 9.17.1.15 Affected: 9.17.1.20 Affected: 9.17.1.30 Affected: 9.17.1.33 Affected: 9.17.1.39 Affected: 9.17.1.45 Affected: 9.17.1.46 Affected: 9.18.1 Affected: 9.18.1.3 Affected: 9.18.2 Affected: 9.18.2.5 Affected: 9.18.2.7 Affected: 9.18.2.8 Affected: 9.18.3 Affected: 9.18.3.39 Affected: 9.18.3.46 Affected: 9.18.3.53 Affected: 9.18.3.55 Affected: 9.18.3.56 Affected: 9.18.4 Affected: 9.18.4.5 Affected: 9.18.4.8 Affected: 9.18.4.22 Affected: 9.18.4.24 Affected: 9.18.4.29 Affected: 9.18.4.34 Affected: 9.18.4.40 Affected: 9.18.4.47 Affected: 9.18.4.50 Affected: 9.18.4.52 Affected: 9.18.4.53 Affected: 9.18.4.57 Affected: 9.18.4.66 Affected: 9.18.4.67 Affected: 9.18.4.68 Affected: 9.19.1 Affected: 9.19.1.5 Affected: 9.19.1.9 Affected: 9.19.1.12 Affected: 9.19.1.18 Affected: 9.19.1.22 Affected: 9.19.1.24 Affected: 9.19.1.27 Affected: 9.19.1.28 Affected: 9.19.1.31 Affected: 9.19.1.37 Affected: 9.19.1.38 Affected: 9.19.1.42 Affected: 9.20.1 Affected: 9.20.1.5 Affected: 9.20.2 Affected: 9.20.2.10 Affected: 9.20.2.21 Affected: 9.20.2.22 Affected: 9.20.3 Affected: 9.20.3.4 Affected: 9.20.3.7 Affected: 9.20.3.9 Affected: 9.20.3.10 Affected: 9.20.3.13 Affected: 9.20.3.16 Affected: 9.20.4 Affected: 9.20.4.7 Affected: 9.20.4.10 Affected: 9.20.4.14 Affected: 9.22.1.1 Affected: 9.22.1.3 Affected: 9.22.1.2 Affected: 9.22.1.6 Affected: 9.22.2.9 Affected: 9.22.2.13 Affected: 9.22.2.14 Affected: 9.23.1 Affected: 9.23.1.7 Affected: 9.23.1.13 Affected: 9.23.1.19 Affected: 9.23.1.22 |
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{
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}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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