VulnSocial

CVE-2026-20010Disclosure

LOWCVSS 7.4 · HIGH

Signal is active with 2 mentions in latest observed window

Immediate actions

  • Track advisory updates for patch or workaround availability

Recommended action window: Monitor and triage in normal cycle

NVD description

A vulnerability in the Link Layer Discovery Protocol (LLDP) feature of Cisco NX-OS Software could allow an unauthenticated, adjacent attacker to cause the LLDP process to restart, which could cause an affected device to reload unexpectedly. This vulnerability is due to improper handling of specific fields in an LLDP frame. An attacker could exploit this vulnerability by sending a crafted LLDP packet to an interface of an affected device. A successful exploit could allow the attacker to cause the device to reload, resulting in a denial of service (DoS) condition. Note: LLDP is a Layer 2 link protocol. To exploit this vulnerability, an attacker would need to be directly connected to an interface of an affected device, either physically or logically (for example, through a Layer 2 Tunnel configured to transport the LLDP protocol).

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0.0/ 10 priority

Sources & remediation

Other references
Weakness type (CWE)
CWE-805

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

NONE

Momentum

STABLE

Threat summary

  • 3 mentions across 2 observed days
  • Momentum state: stable

What's happening

  • Technical details provided in 3 signals
  • Disclosure: 2 classified signals
  • General: 1 classified signal
  • Peaked at 2 mentions on most recent observed day (2026-02-26)
  • 3 total mentions across 2 days

Deep dive

Activity timeline3 mentions / 2d
01122Mentions · 2026-02-25: 1Mentions · 2026-02-26: 2Technical Details · 2026-02-25: 1Technical Details · 2026-02-26: 202-2502-26
Signal classification2 categories
Disclosure
266.7%
General
133.3%
Referenced assets3 URLs
Classification over time
DateTotalLabels
2026-02-251
General1
2026-02-262
Disclosure2
Full discourse3 posts
  • Infoflowcloud@infoflowcloud
    Disclosure

    🚨*CVE* CVE-2026-20010 A vulnerability in the Link Layer Discovery Protocol (LLDP) feature of Cisco NX-OS Software could allow an unauthenticated, adjacent attacker to cause the LLDP proces… https://www.cve.org/CVERecord?id=CVE-2026-20010 ----- Traducción: CVE-2026-20010 Una… http://infoflow.cloud`

    Post summary

    The post announces CVE-2026-20010, a vulnerability in Cisco NX-OS LLDP that could allow unauthenticated adjacent attackers to impact the LLDP process.

    0000043
    55 followersView on X
  • CVE@CVEnew
    Disclosure

    CVE-2026-20010 A vulnerability in the Link Layer Discovery Protocol (LLDP) feature of Cisco NX-OS Software could allow an unauthenticated, adjacent attacker to cause the LLDP proces… https://www.cve.org/CVERecord?id=CVE-2026-20010

    Post summary

    A new CVE (CVE-2026-20010) affecting Cisco NX-OS's LLDP feature is disclosed, allowing unauthenticated adjacent attackers to potentially disrupt the LLDP process.

    00000928
    56.6K followersView on X
  • Vulmon Vulnerability Feed@VulmonFeeds
    General

    CVE-2026-20010 Cisco NX-OS LLDP Denial of Service Vulnerability via Crafted Packet https://vulmon.com/vulnerabilitydetails?qid=CVE-2026-20010

    Post summary

    A brief notice of a Cisco NX‑OS LLDP denial‑of‑service vulnerability (CVE‑2026‑20010) with a link to a vulnerability database, lacking detailed technical or exploit information.

    0000049
    4.0K followersView on X

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