CVE-2026-20073 (GCVE-0-2026-20073)
Vulnerability from cvelistv5 – Published: 2026-03-04 17:52 – Updated: 2026-03-04 18:07
VLAI?
Title
Cisco Secure Firewall Adaptive Security Appliance Software and Cisco Secure Firewall Threat Defense Software Access Control List Bypass Vulnerability
Summary
A vulnerability in Cisco Secure Firewall Adaptive Security Appliance (ASA) Software and Cisco Secure Firewall Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to send traffic that should be denied through an affected device.
This vulnerability is due to improper error handling when an affected device that is joining a cluster runs out of memory while replicating access control rules. An attacker could exploit this vulnerability by sending traffic that should be blocked through the device. A successful exploit could allow the attacker to bypass access controls and reach devices in protected networks.
Severity ?
5.8 (Medium)
CWE
- CWE-284 - Improper Access Control
Assigner
References
Impacted products
| Vendor | Product | Version | |||||||
|---|---|---|---|---|---|---|---|---|---|
| Cisco | Cisco Secure Firewall Adaptive Security Appliance (ASA) Software |
Affected:
9.12.3
Affected: 9.12.1 Affected: 9.12.2 Affected: 9.12.4 Affected: 9.12.3.2 Affected: 9.12.3.7 Affected: 9.12.2.5 Affected: 9.12.3.12 Affected: 9.12.1.3 Affected: 9.12.2.4 Affected: 9.12.1.2 Affected: 9.12.2.9 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: 9.12.4.8 Affected: 9.12.4.10 Affected: 9.12.4.13 Affected: 9.12.4.18 Affected: 9.12.4.24 Affected: 9.16.1 Affected: 9.12.4.26 Affected: 9.16.1.28 Affected: 9.12.4.29 Affected: 9.16.2 Affected: 9.12.4.30 Affected: 9.16.2.3 Affected: 9.12.4.35 Affected: 9.16.2.7 Affected: 9.12.4.37 Affected: 9.17.1 Affected: 9.16.2.11 Affected: 9.16.2.13 Affected: 9.12.4.39 Affected: 9.12.4.38 Affected: 9.16.2.14 Affected: 9.17.1.7 Affected: 9.12.4.40 Affected: 9.16.3.3 Affected: 9.16.3 Affected: 9.16.3.14 Affected: 9.17.1.9 Affected: 9.12.4.41 Affected: 9.17.1.10 Affected: 9.18.1 Affected: 9.12.4.47 Affected: 9.16.3.15 Affected: 9.18.1.3 Affected: 9.17.1.11 Affected: 9.12.4.48 Affected: 9.18.2 Affected: 9.16.3.19 Affected: 9.17.1.13 Affected: 9.12.4.50 Affected: 9.17.1.15 Affected: 9.12.4.52 Affected: 9.16.3.23 Affected: 9.18.2.5 Affected: 9.16.4 Affected: 9.12.4.54 Affected: 9.17.1.20 Affected: 9.18.2.7 Affected: 9.19.1 Affected: 9.16.4.9 Affected: 9.12.4.55 Affected: 9.18.2.8 Affected: 9.16.4.14 Affected: 9.18.3 Affected: 9.19.1.5 Affected: 9.12.4.56 Affected: 9.17.1.30 Affected: 9.19.1.9 Affected: 9.18.3.39 Affected: 9.16.4.19 Affected: 9.12.4.58 Affected: 9.19.1.12 Affected: 9.18.3.46 Affected: 9.16.4.27 Affected: 9.19.1.18 Affected: 9.18.3.53 Affected: 9.18.3.55 Affected: 9.16.4.38 Affected: 9.17.1.33 Affected: 9.12.4.62 Affected: 9.16.4.39 Affected: 9.18.3.56 Affected: 9.20.1 Affected: 9.16.4.42 Affected: 9.19.1.22 Affected: 9.18.4 Affected: 9.20.1.5 Affected: 9.18.4.5 Affected: 9.19.1.24 Affected: 9.16.4.48 Affected: 9.18.4.8 Affected: 9.20.2 Affected: 9.19.1.27 Affected: 9.12.4.65 Affected: 9.16.4.55 Affected: 9.18.4.22 Affected: 9.20.2.10 Affected: 9.16.4.57 Affected: 9.19.1.28 Affected: 9.17.1.39 Affected: 9.12.4.67 Affected: 9.18.4.24 Affected: 9.20.2.21 Affected: 9.16.4.61 Affected: 9.19.1.31 Affected: 9.18.4.29 Affected: 9.20.2.22 Affected: 9.16.4.62 Affected: 9.18.4.34 Affected: 9.20.3 Affected: 9.16.4.67 Affected: 9.16.4.70 Affected: 9.18.4.40 Affected: 9.23.1 Affected: 9.22.1.1 Affected: 9.16.4.71 Affected: 9.20.3.4 Affected: 9.18.4.47 Affected: 9.20.3.7 Affected: 9.17.1.45 Affected: 9.19.1.37 Affected: 9.17.1.46 Affected: 9.16.4.76 Affected: 9.20.3.9 Affected: 9.19.1.38 Affected: 9.18.4.50 Affected: 9.22.1.3 Affected: 9.20.3.10 Affected: 9.22.1.2 Affected: 9.18.4.52 Affected: 9.20.3.13 Affected: 9.22.1.6 Affected: 9.18.4.53 Affected: 9.16.4.82 Affected: 9.22.2 Affected: 9.20.3.16 Affected: 9.19.1.42 Affected: 9.18.4.57 Affected: 9.16.4.84 Affected: 9.23.1.3 Affected: 9.20.3.20 Affected: 9.22.2.4 Affected: 9.23.1.7 Affected: 9.20.4 Affected: 9.22.2.9 Affected: 9.23.1.13 Affected: 9.20.4.7 Affected: 9.22.2.13 Affected: 9.18.4.66 Affected: 9.20.4.10 Affected: 9.23.1.19 Affected: 9.18.4.67 Affected: 9.18.4.68 |
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"vendor": "Cisco",
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{
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{
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{
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"version": "7.2.3"
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{
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{
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"version": "7.1.0.3"
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{
"status": "affected",
"version": "7.2.4"
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{
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"version": "7.0.6"
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{
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{
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{
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{
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},
{
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},
{
"status": "affected",
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{
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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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