CVE-2026-20048 (GCVE-0-2026-20048)
Vulnerability from cvelistv5
Published
2026-02-25 16:26
Modified
2026-02-25 19:05
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-789 - Uncontrolled Memory Allocation
Summary
A vulnerability in the Simple Network Management Protocol (SNMP) subsystem of Cisco Nexus 9000 Series Fabric Switches in ACI mode could allow an authenticated, remote attacker to cause a denial of service (DoS) condition on an affected device.
This vulnerability is due to improper processing when parsing SNMP requests. An attacker could exploit this vulnerability by continuously sending SNMP queries to a specific MIB of an affected device. A successful exploit could allow the attacker to cause a kernel panic on the device, resulting in a reload and a DoS condition.
Note: This vulnerability affects SNMP versions 1, 2c, and 3. To exploit this vulnerability through SNMPv1 or SNMPv2c, the attacker must have a valid read-only SNMP community string for the affected system. To exploit this vulnerability through SNMPv3, the attacker must have valid SNMP user credentials for the affected system.
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Cisco | Cisco NX-OS System Software in ACI Mode |
Version: 15.2(1g) Version: 15.2(2e) Version: 15.2(2f) Version: 15.2(2g) Version: 15.2(2h) Version: 15.2(3f) Version: 15.2(3e) Version: 15.2(3g) Version: 15.2(4d) Version: 15.2(4e) Version: 15.2(5c) Version: 15.2(5d) Version: 16.0(1g) Version: 15.2(5e) Version: 15.2(4f) Version: 15.2(6e) Version: 15.2(6h) Version: 16.0(1j) Version: 15.2(6g) Version: 15.2(7f) Version: 15.2(7g) Version: 16.0(2h) Version: 15.2(8d) Version: 16.0(2j) Version: 15.2(8e) Version: 16.0(3d) Version: 16.0(3e) Version: 15.2(8f) Version: 15.2(8g) Version: 15.3(1d) Version: 15.2(8h) Version: 16.0(4c) Version: 15.3(2a) Version: 15.2(8i) Version: 16.0(5h) Version: 15.3(2b) Version: 16.0(3g) Version: 16.0(5j) Version: 15.3(2c) Version: 16.0(6c) Version: 15.3(2d) Version: 16.1(1f) Version: 16.0(7e) Version: 16.0(8e) Version: 15.3(2e) Version: 16.0(8f) Version: 16.1(2f) Version: 16.1(2g) Version: 15.3(2f) Version: 16.0(9c) Version: 16.1(3f) Version: 16.0(9d) Version: 16.0(6h) Version: 16.0(8h) Version: 16.1(3g) Version: 16.0(9e) Version: 16.1(4h) |
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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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