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01 Record

CVE-2026-20048

Cisco NX-OS Software SNMP Denial of Service Vulnerability

HighPUBLISHEDCNA: cisco
CNA base score7.7 CVSS v3.xCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
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02 Description

Cisco NX-OS Software SNMP Denial of Service Vulnerability

03 Exploitation and scoring

Exploitation
Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.
SSVC decision
  • ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
  • AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
  • Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.
CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.
EPSS probability
0.34% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 27.6% of scored records. A rank, not a probability.
NVD base score
7.7 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
NVD analysis status
Deferred. NVD last modified this record on 2026-06-17.
Red Hat severity
No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published
2026-02-25 16:26Z8 MO AGO
Last updated
2026-02-25 19:05Z8 MO AGO
Reserved
2025-10-08
Assigning CNA
cisco
Record state
PUBLISHED
Severity
High (CVSS 7.7)
CNA CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
Weaknesses
  • CWE-789Memory Allocation with Excessive Size ValueVariant
Data version
5.2
Document digest
1f44200f01644a000d39a61f2dc9b1c5d593443a04fb5edef396ff0ed268865d

05 Affected products

VendorProductVersionsPlatforms
CiscoCisco NX-OS System Software in ACI Mode15.2(1g), 15.2(2e), 15.2(2f), 15.2(2g), 15.2(2h), 15.2(3f), 15.2(3e), 15.2(3g), 15.2(4d), 15.2(4e), 15.2(5c), 15.2(5d), 16.0(1g), 15.2(5e), 15.2(4f), 15.2(6e), 15.2(6h), 16.0(1j), 15.2(6g), 15.2(7f), 15.2(7g), 16.0(2h), 15.2(8d), 16.0(2j), 15.2(8e), 16.0(3d), 16.0(3e), 15.2(8f), 15.2(8g), 15.3(1d), 15.2(8h), 16.0(4c), 15.3(2a), 15.2(8i), 16.0(5h), 15.3(2b), 16.0(3g), 16.0(5j), 15.3(2c), 16.0(6c), 15.3(2d), 16.1(1f), 16.0(7e), 16.0(8e), 15.3(2e), 16.0(8f), 16.1(2f), 16.1(2g), 15.3(2f), 16.0(9c), 16.1(3f), 16.0(9d), 16.0(6h), 16.0(8h), 16.1(3g), 16.0(9e), 16.1(4h)—

06 References