Search: “Video Phone 8875”

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Cisco Desk Phone 9800 Series, IP Phone 7800 and 8800 Series, and Video Phone 8875 with SIP Software Denial of Service Vulnerability

Cisco warns of a DoS flaw in SIP software on Desk Phone 9800 and IP Phone 7800/8800 series from improper HTTP packet memory handling.

Cisco disclosed a denial of service vulnerability affecting Desk Phone 9800 Series, IP Phone 7800 and 8800 Series, and Video Phone 8875 devices running Cisco SIP Software. An unauthenticated remote attacker can send a continuous stream of crafted HTTP packets, causing sustained memory consumption until the device becomes unresponsive. A manual reboot is required to recover an affected device. No CVE identifier was listed in the advisory text.

Cisco Security AdvisoriesSep 2, 16:00 UTC · 13d agoAdvisory

Cisco security advisory (AV26-876)

Canada's Cyber Centre relayed Cisco advisories covering a Nexus 9000 Silicon One RCE, IOS XR hardening, and denial-of-service flaws across IP phone lines.

The Canadian Centre for Cyber Security advisory AV26-876 lists Cisco vulnerabilities affecting IOS XR, Nexus 9000 Series switches, and several IP phone series. Included are a Nexus 9000 Silicon One remote code execution vulnerability, a September 2026 IOS XR security hardening release, and SIP software denial-of-service flaws in Desk Phone 9800, IP Phone 7800/8800, and Video Phone 8875. The Cyber Centre urges users and administrators to review the Cisco advisories and apply updates as they become available. No active exploitation is reported in the advisory.

Canadian Centre for Cyber SecuritySep 3, 13:13 UTC · 12d agoAdvisory

Critical Cisco Nexus 9000 Flaw Lets Unauthenticated Remote Attackers Run Code as Root

Cisco patches critical CVE-2026-20212 (CVSS 9.8) in Nexus 9000 switches allowing unauthenticated remote root code execution, plus IOS XR hardening release.

Cisco released fixes for CVE-2026-20212 (CVSS 9.8), a flaw in 10 Silicon One-based Nexus 9000 switch models that binds a service to an unrestricted IP, leaving TCP ports 43210/43211 reachable in the default Layer 3 VRF and allowing unauthenticated remote attackers to execute code as root; exploitation attempts can also crash the S1HAL process. 45 NX-OS releases (10.3(1) through 10.6(3s)) are affected, with mitigations including infrastructure ACLs, the Live Protect shield lp00031, and fixed releases identified via Cisco's Software Checker. Cisco simultaneously issued an IOS XR hardening release bundling 7 umbrella CVEs, two rated 9.8 (CVE-2026-20274 for memory-safety bugs and CVE-2026-20279 for access-control bugs), affecting all releases with SMUs available for 14 releases and upgrades required for 93 of 111 listed releases. No malicious exploitation was reported as of the September 2 disclosure.

The Hacker NewsSep 3, 15:52 UTC · 12d agoVulnerability CVE-2026-20212 CVE-2026-20274 CVE-2026-20279+5 CVEs

Cisco Advance Notification for Publication of September 2, 2026, Security Advisories

Cisco PSIRT published September 2, 2026 advisories including critical IOS XR hardening fixes and a Nexus 9000 remote code execution flaw.

Cisco's PSIRT released its September 2, 2026 batch of security advisories, including a Cisco IOS XR Software security hardening release bundling six CVEs (CVE-2026-20274 through CVE-2026-20280) rated critical with CVSS 9.8. A separate critical (CVSS 9.8) remote code execution vulnerability, CVE-2026-20212, affects Nexus 9000 Series switches with Silicon One, and a high-severity (CVSS 7.5) denial-of-service flaw, CVE-2026-20281, affects the Desk Phone 9800 Series and related SIP phones. Administrators should review the advisories and prioritize patching the critical-rated issues.

Cisco Security AdvisoriesSep 2, 16:02 UTC · 13d agoAdvisory CVE-2026-20277 CVE-2026-20278 CVE-2026-20280+6 CVEs