CVE Explorer
CVE-2026-20118
A vulnerability in the handling of an Egress Packet Network Interface (EPNI) Aligner interrupt in Cisco IOS XR Software for Cisco Network Convergence System (NCS) 5500 Series with NC57 line cards and Cisco NCS 5700 Routers and Cisco IOS XR Software for Third Party Software could allow an unauthenticated, remote attacker to cause the network processing unit (NPU) and ASIC to stop processing, preventing traffic from traversing the interface.
This vulnerability is due to the corruption of packet
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0
Affected products and versions
1 source assertion{"defaultStatus":"unknown","product":"Cisco IOS XR Software","vendor":"Cisco","versions":[{"status":"affected","version":"7.9.1"},{"status":"affected","version":"7.10.1"},{"status":"affected","version":"7.9.2"},{"status":"affected","version":"7.11.1"},{"status":"affected","version":"7.10.2"},{"status":"affected","version":"24.1.1"},{"status":"affected","version":"7.11.2"},{"status":"affected","version":"24.2.1"},{"status":"affected","version":"24.1.2"},{"status":"affected","version":"24.3.1"},{"status":"affected","version":"24.4.1"},{"status":"affected","version":"24.2.11"},{"status":"affected…
- cve_program_cvelist_v5affectedurn:baitaphish:normalized-source-record:v2:c16b8b85c3be0433ccb69d2dd9c13ce51e61a04db870a82097e127afea098391 · sha256:532fd4ea7be60c48… · /containers/cna/affected/0
Provider-owned CVSS observations
1 source assertion{"metric":{"attackComplexity":"HIGH","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":6.8,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"CHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:N/A:H","version":"3.1"},"metric_type":"cvssV3_1"}
- cve_program_cvelist_v5cvssurn:baitaphish:normalized-source-record:v2:c16b8b85c3be0433ccb69d2dd9c13ce51e61a04db870a82097e127afea098391 · sha256:532fd4ea7be60c48… · /containers/cna/metrics/0/cvssV3_1
CWE assertions
1 source assertion{"cweId":"CWE-460","description":"Improper Cleanup on Thrown Exception","lang":"en","type":"cwe"}
- cve_program_cvelist_v5cweurn:baitaphish:normalized-source-record:v2:c16b8b85c3be0433ccb69d2dd9c13ce51e61a04db870a82097e127afea098391 · sha256:532fd4ea7be60c48… · /containers/cna/problemTypes/0/descriptions/0
Source references
1 source assertion{"name":"cisco-sa-xrncs-epni-int-dos-TWMffUsN","url":"https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-xrncs-epni-int-dos-TWMffUsN"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:c16b8b85c3be0433ccb69d2dd9c13ce51e61a04db870a82097e127afea098391 · sha256:532fd4ea7be60c48… · /containers/cna/references/0
Attribution and limitations
- CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →
Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.