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Highest advisory severityMedium Exploited 1 vendor · 1 advisory

CVE-2026-20118

CVE-2026-20118: 1 tracked advisory record across Cisco. exploitation observed. Compare vendor sources and published fix guidance.

Compare the source-linked records below. Ratings and product/version details belong to each advisory; they are not a single CVE-wide score or proof that every listed product is affected. How VulniPulse collects and checks evidence.

NVD detail CVE.org

Vendor advisory comparison

Cisco

1 advisory
  • Advisory severityMedium6.8

    Medium [CVE-2026-20118] Cisco IOS XR Egress Packet Network Interface Aligner Interrupt Denial of Service Vulnerability

    cisco-sa-xrncs-epni-int-dos-TWMffUsNSource published Source updated

    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 packets in specific cases when an EPNI Aligner interrupt is triggered while an affected device is experien…

    Related products — impact not confirmed
    • Cisco IOS XR Software
    Source-reported affected versions
    • Scope: This vulnerability affects the following Cisco products if they are running a vulnerable release of Cisco IOS XR Software, regardless of the device configuration:
    • Release 7.8.2 and earlier (first fixed: Not affected)
    • 7.9 — Migrate to a fixed release or apply SMU
    • 7.10 — Migrate to a fixed release or apply SMU

    6 more entries in the full advisory.

    Source-reported fixed versions
    • Not affected
    Mitigation guidance
    • Upgrade to the first fixed release for your train per the Fixed Releases table in this advisory.
    • Release 7.8.2 and earlier: upgrade to Not affected.
    • Release 7.9: migrate to a fixed release or apply SMU.
    • Release 7.10: migrate to a fixed release or apply SMU.

    5 more entries in the full advisory.

    Workarounds
    • There are no workarounds that address this vulnerability.
    Full advisory and evidenceOpen source bulletin

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