Find notable cyber news and cases, enriched with sources, timelines, and signals.
Home Watchlists Beta Browse News Feed Stats About Contact

Cisco security patch release for CVE-2026-20303

Security Patch Release
First reported
Last updated
Happening score
H score 43
1 unique sources, 1 articles

Summary

Hide ▲

Cisco rolled out updates for Cisco Catalyst SD-WAN Software to fix five critical CVEs across affected releases, including CVE-2026-20303 and CVE-2026-20304. The patch bundle closes high-severity flaws that could expose deployed network management systems to validation, access-control, link-resolution, and sensitive-data risks. Cisco said the issues were found during internal security testing and are not known to be actively exploited.

Related Happenings

Cisco security patch release for CVE-2026-20245

Security Patch Release
H score38 First: 25.06.2026 00:29 Last: 25.06.2026 00:29 Sources 1

About this happening: Cisco released security updates for Cisco Catalyst SD-WAN after CVE-2026-20245 was linked to root-level command execution, and customers were told to move to fixed sof...

Open Happening

Cisco Secure Workload REST API patch release (CVE-2026-20223)

Security Patch Release
H score55 First: 22.05.2026 08:36 Last: 22.05.2026 08:36 Sources 1

About this happening: Cisco patched CVE-2026-20223, a CVSS 10.0 Secure Workload REST API flaw that could expose sensitive data and allow configuration changes across tenant boundaries. The upda...

Open Happening

Cisco ThousandEyes and Nexus security patches

Security Patch Release
H score31 First: 21.05.2026 15:04 Last: 21.05.2026 15:04 Sources 1

About this happening: Cisco released patches for three medium-severity vulnerabilities affecting ThousandEyes Virtual Appliance, ThousandEyes Enterprise Agent, and Nexus 3000/9000 switche...

Open Happening

Cisco security patch release for CVE-2026-20182

Security Patch Release
H score60 First: 14.05.2026 20:45 Last: 14.05.2026 20:45 Sources 1

About this happening: Cisco released updates for CVE-2026-20182, a maximum-severity authentication bypass in Catalyst SD-WAN Controller/Manager, after the flaw was exploited in limite...

Open Happening

Cisco security patch release for CVE-2026-20184

Security Patch Release
H score44 First: 16.04.2026 14:27 Last: 16.04.2026 14:27 Sources 1

About this happening: Cisco released patches for four critical flaws affecting Identity Services Engine (ISE), ISE-PIC, and Webex Services, closing paths to arbitrary code executi...

Open Happening

Timeline

  1. 06.08.2026 20:13 2 articles · 2h ago

    Cisco releases fixes for critical Catalyst SD-WAN and IOS XE vulnerabilities

    Mitigation Patch Update

    Cisco rolled out updates for Cisco Catalyst SD-WAN Software and Cisco IOS XE Software to address multiple critical vulnerabilities, including flaws tracked as CVE-2026-20303, CVE-2026-20304, CVE-2026-20310, and CVE-2026-20272. Cisco said the issues were found during internal security testing using existing testing processes and frontier AI models, are not known to be actively exploited, and that customers should apply the necessary updates for protection.

    Show sources
    Open in new tab