Priority CRITICAL 97KEV
A vulnerability in the Cisco Discovery Protocol implementation for Cisco IOS XR Software could allow an unauthenticated, adjacent attacker to execute arbitrary code or cause a reload on an affected device.
CVSS 3.1HIGH 8.8· Adjacent network · No auth · No interaction · EPSS 0.11685 · Published 2020-02-05 · Fixed in 6.6.3 CWE-134
Priority CRITICAL 97KEV
Multiple Buffer Overflow vulnerabilities in the Link Layer Discovery Protocol (LLDP) subsystem of Cisco IOS Software, Cisco IOS XE Software, and Cisco IOS XR Software could allow an unauthenticated, adjacent attacker to…
CVSS 3.1HIGH 8.8· Adjacent network · No auth · No interaction · EPSS 0.03354 · Published 2018-03-28 · No fix listed CWE-119
Priority CRITICAL 94KEV
Multiple vulnerabilities in the Distance Vector Multicast Routing Protocol (DVMRP) feature of Cisco IOS XR Software could allow an unauthenticated, remote attacker to either immediately crash the Internet Group Managemen…
CVSS 3.1HIGH 8.6· Network · No auth · No interaction · EPSS 0.0332 · Published 2020-09-23 · No fix listed CWE-400
Priority CRITICAL 94KEV
A vulnerability in the Distance Vector Multicast Routing Protocol (DVMRP) feature of Cisco IOS XR Software could allow an unauthenticated, remote attacker to exhaust process memory of an affected device.
CVSS 3.1HIGH 8.6· Network · No auth · No interaction · EPSS 0.03702 · Published 2020-08-29 · No fix listed CWE-400
Priority CRITICAL 94KEV
Format String vulnerability in the Link Layer Discovery Protocol (LLDP) subsystem of Cisco IOS Software, Cisco IOS XE Software, and Cisco IOS XR Software could allow an unauthenticated, adjacent attacker to cause a denia…
CVSS 3.1HIGH 8.0· Adjacent network · No auth · User interaction · EPSS 0.03478 · Published 2018-03-28 · No fix listed CWE-119
Priority CRITICAL 90KEV
The HTTP/2 protocol allows a denial of service (server resource consumption) because request cancellation can reset many streams quickly, as exploited in the wild in August through October 2023.
CVSS 3.1HIGH 7.5· Network · No auth · No interaction · EPSS 0.99999 · Published 2023-10-10 · Partial fix · 1.28.0, 0.17.0 +9 CWE-400
Priority CRITICAL 90KEV
The server IKEv1 implementation in Cisco IOS 12.2 through 12.4 and 15.0 through 15.6, IOS XE through 3.18S, IOS XR 4.3.x and 5.0.x through 5.2.x, and PIX before 7.0 allows remote attackers to obtain sensitive information…
CVSS 3.1HIGH 7.5· Network · No auth · No interaction · EPSS 0.87687 · Published 2016-09-19 · No fix listed CWE-200
Priority CRITICAL 90KEV
Cisco IOS XR 3.4.0 through 3.9.1, when BGP is enabled, does not properly handle unrecognized transitive attributes, which allows remote attackers to cause a denial of service (peering reset) via a crafted prefix announce…
CVSS 3.1HIGH 7.5· Network · No auth · No interaction · EPSS 0.05668 · Published 2010-08-30 · No fix listed
Priority CRITICAL 86KEV
A vulnerability in the health check RPM of Cisco IOS XR Software could allow an unauthenticated, remote attacker to access the Redis instance that is running within the NOSi container.
CVSS 3.1MEDIUM 6.5· Network · No auth · No interaction · EPSS 0.11471 · Published 2022-05-26 · No fix listed CWE-200
Priority HIGH 84KEV
Cisco IOS XR 3.4.0 through 3.8.1 allows remote attackers to cause a denial of service (session reset) via a BGP UPDATE message with an invalid attribute, as demonstrated in the wild on 17 August 2009.
CVSS 3.1MEDIUM 5.9· Network · No auth · No interaction · EPSS 0.03314 · Published 2009-08-19 · No fix listed CWE-20
Priority MEDIUM 54
A vulnerability in the sysadmin virtual machine (VM) on Cisco ASR 9000 Series Aggregation Services Routers running Cisco IOS XR 64-bit Software could allow an unauthenticated, remote attacker to access internal applicati…
CVSS 3.0CRITICAL 9.8· Network · No auth · No interaction · EPSS 0.02751 · Published 2019-04-17 · Fixed in 6.5.3, 7.0.1 CWE-20
Priority MEDIUM 51
A vulnerability in the web services of Cisco Secure Firewall Adaptive Security Appliance (ASA) Software, Cisco Secure Firewall Threat Defense (FTD) Software, Cisco IOS Software, Cisco IOS XE Software, and Cisco IOS XR So…
CVSS 3.1CRITICAL 9.0· Network · No auth · No interaction · EPSS 0.0716 · Published 2025-09-25 · No fix listed CWE-122
Priority MEDIUM 50
A vulnerability in the Local Packet Transport Services (LPTS) feature set of Cisco ASR 9000 Series Aggregation Services Router Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) c…
CVSS 3.1HIGH 8.6· Network · No auth · No interaction · EPSS 0.03914 · Published 2018-08-15 · No fix listed CWE-400
Priority MEDIUM 49
As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco IOS XR Software engineering team has conducted a comprehensive internal security review.
CVSS 3.1CRITICAL 9.8· Network · No auth · No interaction · EPSS 0.0053 · Published 2026-09-02 · No fix listed CWE-664
Priority MEDIUM 48
A vulnerability in the enhanced Preboot eXecution Environment (PXE) boot loader for Cisco IOS XR 64-bit Software could allow an unauthenticated, remote attacker to execute unsigned code during the PXE boot process on an…
CVSS 3.1CRITICAL 9.8· Network · No auth · No interaction · EPSS 0.02887 · Published 2020-11-06 · No fix listed CWE-284
Priority MEDIUM 48
A vulnerability in the TFTP service of Cisco Network Convergence System 1000 Series software could allow an unauthenticated, remote attacker to retrieve arbitrary files from the targeted device, possibly resulting in inf…
CVSS 3.1HIGH 7.5· Network · No auth · No interaction · EPSS 0.06282 · Published 2019-02-21 · Fixed in 6.5.2 CWE-200
Priority MEDIUM 48
A vulnerability in the IPv6 subsystem of Cisco IOS XR Software Release 5.3.4 for the Cisco Aggregation Services Router (ASR) 9000 Series could allow an unauthenticated, remote attacker to trigger a reload of one or more…
CVSS 3.1HIGH 8.6· Network · No auth · No interaction · EPSS 0.0267 · Published 2018-01-31 · No fix listed CWE-20
Priority MEDIUM 47
Multiple vulnerabilities in the ingress packet processing function of Cisco IOS XR Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device.
CVSS 3.1HIGH 8.6· Network · No auth · No interaction · EPSS 0.01976 · Published 2021-02-04 · No fix listed CWE-399
Priority MEDIUM 47
Multiple vulnerabilities in the ingress packet processing function of Cisco IOS XR Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device.
CVSS 3.1HIGH 8.6· Network · No auth · No interaction · EPSS 0.01976 · Published 2021-02-04 · No fix listed CWE-399
Priority MEDIUM 47
A vulnerability in the ingress packet processing function of Cisco IOS XR Software for Cisco ASR 9000 Series Aggregation Services Routers could allow an unauthenticated, remote attacker to cause a denial of service (DoS)…
CVSS 3.1HIGH 8.6· Network · No auth · No interaction · EPSS 0.01901 · Published 2020-11-12 · No fix listed CWE-404
Priority MEDIUM 46
A vulnerability in the Two-Way Active Measurement Protocol (TWAMP) server feature of Cisco IOS Software and Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause the affected device to reload, re…
CVSS 3.1HIGH 8.6· Network · No auth · No interaction · EPSS 0.00545 · Published 2025-05-07 · No fix listed CWE-20
Priority MEDIUM 46
A vulnerability in the data plane microcode of Lightspeed-Plus line cards for Cisco ASR 9000 Series Aggregation Services Routers could allow an unauthenticated, remote attacker to cause the line card to reset.
CVSS 3.1HIGH 8.6· Network · No auth · No interaction · EPSS 0.01285 · Published 2022-04-15 · No fix listed CWE-126
Priority MEDIUM 46
A vulnerability in the IP Service Level Agreements (IP SLA) responder and Two-Way Active Measurement Protocol (TWAMP) features of Cisco IOS XR Software could allow an unauthenticated, remote attacker to cause device pack…
CVSS 3.1HIGH 8.6· Network · No auth · No interaction · EPSS 0.0129 · Published 2021-09-09 · No fix listed CWE-771
Priority MEDIUM 46
Multiple vulnerabilities in the implementation of Border Gateway Protocol (BGP) Ethernet VPN (EVPN) functionality in Cisco IOS XR Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS…
CVSS 3.1HIGH 8.6· Network · No auth · No interaction · EPSS 0.01312 · Published 2020-01-26 · No fix listed CWE-399
Priority MEDIUM 46
Multiple vulnerabilities in the implementation of Border Gateway Protocol (BGP) Ethernet VPN (EVPN) functionality in Cisco IOS XR Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS…
CVSS 3.1HIGH 8.6· Network · No auth · No interaction · EPSS 0.01312 · Published 2020-01-26 · No fix listed CWE-399
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