Cisco security advisories, August 2026

Every Cisco security advisory published in August 2026, from Cisco Security Advisories, with its severity, CVEs and CISA KEV status. Open a record for affected and fixed versions and the vendor's own link.

Advisories: 24
Critical: 4
High: 7
In CISA KEV: 3
CVEs: 57

Cisco advisories published in August 2026

Aug 26, 2026
Advisory [CVE-2026-20212 +10] Cisco Advance Notification for Publication of September 2, 2026, Security Advisories
Unrated
Aug 19, 2026
Critical [CVE-2026-20231 +4] Cisco Secure Workload Software Security Hardening Release: August 2026
Critical10.0Exploited
Aug 19, 2026
Critical [CVE-2026-20030 +3] Cisco Crosswork Security Hardening Release: August 2026
Critical10.0Exploited
Aug 19, 2026
High [CVE-2026-20320] Cisco BroadWorks Out-of-Band Blind XML External Entity Injection Vulnerability
High7.5ExploitedCISA KEV
Aug 19, 2026
Medium [CVE-2026-20232] Cisco Industrial Ethernet 1000 Series Switches Stored Cross-Site Scripting Vulnerability
Medium5.4
Aug 19, 2026
Medium [CVE-2026-20314] Cisco Packaged Contact Center Enterprise and Cisco Unified Contact Center Enterprise Server-Side Request Forgery Vulnerability
Medium5.0
Aug 19, 2026
Medium [CVE-2026-20327] Cisco Unified Intelligence Center SQL Injection Vulnerability
Medium6.5
Aug 19, 2026
Medium [CVE-2026-20177] Cisco Industrial Ethernet 1000 Series Switches Denial of Service Vulnerability
Medium5.3
Aug 19, 2026
Medium [CVE-2026-20302] Cisco RoomOS Stack Overflow Vulnerability
Medium6.1
Aug 12, 2026
Advisory [CVE-2026-20030 +14] Cisco Advance Notification for Publication of August 19, 2026, Security Advisories
UnratedExploitedCISA KEV
Aug 11, 2026
High [CVE-2026-20349] Cisco Secure Firewall Adaptive Security Appliance and Secure Firewall Threat Defense Software Remote Access SSL VPN Denial of Service Vulnerability
High8.6ExploitedCISA KEV
Aug 7, 2026
High [CVE-2026-20337 +6] ClamAV Vulnerabilities Affecting Cisco Products: August 2026
High7.5PoC reported
Aug 5, 2026
Critical [CVE-2026-20267 +6] Cisco IOS XE Software Security Hardening Release: August 2026
Critical9.8Exploited
Aug 5, 2026
Critical [CVE-2026-20303 +4] Cisco Catalyst SD-WAN Software Security Hardening Release: August 2026
Critical9.9Exploited
Aug 5, 2026
High [CVE-2026-20263] Cisco IOS XE Software Blocks Extensible Exchange Protocol Denial of Service Vulnerability
High8.6
Aug 5, 2026
High [CVE-2026-20124] Cisco IOS XE Software SNMP Denial of Service Vulnerability
High7.7
Aug 5, 2026
High [CVE-2026-20301] Cisco IOS Software and IOS XE Software Extensible Messaging Client Protocol Denial of Service Vulnerability
High8.6
Aug 5, 2026
High [CVE-2026-20200 +1] Cisco Integrated Management Controller Argument Injection Vulnerabilities
High8.8PoC reported
Aug 5, 2026
Medium [CVE-2026-20311] Cisco IOS XE Software Web-Based Management Interface Denial of Service Vulnerability
Medium6.3
Aug 5, 2026
Medium [CVE-2026-20198] Cisco Integrated Management Controller Cross-Site Scripting Vulnerability
Medium4.8
Aug 5, 2026
Medium [CVE-2026-20289] Cisco RoomOS Logging Subsystem Information Disclosure Vulnerability
Medium5.7
Aug 5, 2026
Medium [CVE-2026-20294] Cisco Catalyst SD-WAN Manager Information Disclosure Vulnerability
Medium6.5
Aug 5, 2026
Medium [CVE-2026-20028] Cisco Terminal Services Agent Firewall Rules Bypass Vulnerability
Medium5.0
Aug 5, 2026
Medium [CVE-2026-20308] Cisco IOS XE Software Web-Based Management Interface Denial of Service Vulnerability
Medium4.3

Get an email when Cisco publishes the next one.

See Cisco's last 90 days of advisories first. Then choose one product with live alerts free for life, or a free month of real-time alerts on everything with the severity, the fixed version and the vendor's link (card needed, then US$15/month; we email you before the first charge).

Alert me about Cisco

Dates are each advisory's publication date at the source, in UTC; a record with no source date is filed under the day VulniPulse first saw it.