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Multiple vulnerabilities in the Distance Vector Multicast Routing Protocol (DVMRP) feature of Cisco IOS XR Software allow an unauthenticated remote attacker to trigger denial of service conditions in the Internet Group Management Protocol (IGMP) process. The flaws are caused by incorrect handling of IGMP packets within the DVMRP feature. By sending crafted IGMP traffic to an affected device, an attacker can either immediately crash the IGMP process or force it to consume available memory until it eventually crashes. The resulting resource pressure can also negatively affect other processes running on the device.
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lpts pifib hardware police flow igmp rate <value>, which can slow exploitation of the memory-exhaustion condition but does not eliminate the vulnerability. Additionally, apply inbound ACLs/ACEs on relevant interfaces to block DVMRP IGMP traffic, for example by denying igmp any any dvmrp in an IPv4 ACL.Patch, then assume compromise.
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No public exploit code observed for this vulnerability.
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
1 sources tracked across advisories and community write-ups. News coverage will land here when it surfaces.
No news coverage yet. Advisories and community discussion only.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.