Lucene search
+L

CVE-2026-21911: Incorrect Calculation

🗓️ 15 Jan 2026 00:00:00Reported by Rapid7Type 
rapid7
 rapid7
🔗 www.rapid7.com👁 2 Views

An Incorrect Calculation vulnerability in the Layer 2 Control Protocol Daemon (l2cpd) of Juniper Networks Junos OS Evolved allows an unauthenticated network-adjacent attacker flapping the management interface to cause the learning of new MACs over...

Related
Refs
ReporterTitlePublishedViews
Family
attackerkb
attackerkb
CVE-2026-21911
15 Jan 202620:23
attackerkb
circl
Circl
CVE-2026-21911
15 Jan 202621:44
circl
cnnvd
CNNVD
Juniper Junos OS Evolved security vulnerabilities
15 Jan 202600:00
cnnvd
cve
CVE
CVE-2026-21911
15 Jan 202620:23
cve
cvelist
Cvelist
CVE-2026-21911 Junos OS Evolved: Flapping management interface causes MAC learning on label-switched interfaces to stop
15 Jan 202620:23
cvelist
euvd
EUVD
EUVD-2026-2699
15 Jan 202620:23
euvd
ncsc
NCSC
Vulnerabilities fixed in Juniper Networks JunOS
16 Jan 202610:07
ncsc
nvd
NVD
CVE-2026-21911
15 Jan 202621:16
nvd
osv
OSV
CVE-2026-21911
15 Jan 202621:16
osv
ptsecurity
Positive Technologies
PT-2026-3125
15 Jan 202600:00
ptsecurity
Rows per page

Data

Build on a solid foundation with Vulners data

We provide the essential building blocks for cybersecurity solutions with comprehensive, structured, and constantly updated vulnerability and exploits data

Api

Power your application with Vulners API

The Vulners REST API offers reliable, high-performance access to vulnerability intelligence, with 99.9% SLA uptime and CDN-backed data delivery for seamless global access

App

Assess and manage vulnerabilities with Vulners tools

Built on top of Vulners' database and SDK, end-user solutions give security professionals and developers lightweight and powerful tools for vulnerability remediation

23 Jan 2026 00:00Current
CVSS 3.16.5
CVSS 47.1
EPSS0.00242
SSVC
2