Apple CVE-2025-20311
HIGHCVSS VectorNVD
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
Lifecycle Timeline
2DescriptionNVD
A vulnerability in the handling of certain Ethernet frames in Cisco IOS XE Software for Catalyst 9000 Series Switches could allow an unauthenticated, adjacent attacker to cause an egress port to become blocked and drop all outbound traffic. This vulnerability is due to improper handling of crafted Ethernet frames. An attacker could exploit this vulnerability by sending crafted Ethernet frames through an affected switch. A successful exploit could allow the attacker to cause the egress port to which the crafted frame is forwarded to start dropping all frames, resulting in a denial of service (DoS) condition.
AnalysisAI
A vulnerability in the handling of certain Ethernet frames in Cisco IOS XE Software for Catalyst 9000 Series Switches could allow an unauthenticated, adjacent attacker to cause an egress port to. Rated high severity (CVSS 7.4), this vulnerability is no authentication required, low attack complexity. No vendor patch available.
Technical ContextAI
This vulnerability is classified under CWE-19. A vulnerability in the handling of certain Ethernet frames in Cisco IOS XE Software for Catalyst 9000 Series Switches could allow an unauthenticated, adjacent attacker to cause an egress port to become blocked and drop all outbound traffic. This vulnerability is due to improper handling of crafted Ethernet frames. An attacker could exploit this vulnerability by sending crafted Ethernet frames through an affected switch. A successful exploit could allow the attacker to cause the egress port to which the crafted frame is forwarded to start dropping all frames, resulting in a denial of service (DoS) condition.
Affected ProductsAI
Ethernet frames in Cisco IOS XE Software for Catalyst 9000 Series Switches.
RemediationAI
No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.
More from same product – last 7 days
SQL injection in Pimcore's CustomReportsBundle (versions ≤ 12.3.5) lets an authenticated user holding the reports_config
Arbitrary code execution in Docker Model Runner's vllm-metal inference backend on macOS allows any container on the Dock
Arbitrary code execution in Docker Desktop's Model Runner on macOS allows any container on the Docker network to escape
Local privilege escalation in Apple macOS allows a malicious app already running with low privileges to elevate to root
Local privilege escalation in Canonical Multipass for macOS before 1.16.3 allows a low-privileged local user to obtain r
Share
External POC / Exploit Code
Leaving vuln.today