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CVE detail

CVE-2020-3566

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. The vulnerability is due to insufficient queue management for Internet Group Management Protocol (IGMP) packets. An attacker could exploit this vulnerability by sending crafted IGMP traffic to an affected device. A successful exploit could allow the attacker to cause memory exhaustion, resulting in instability of other processes. These processes may include, but are not limited to, interior and exterior routing protocols. Cisco will release software updates that address this vulnerability.

CVSS 8.6 · HighBuzz score 58.8KEV listed

Buzz score

Why this CVE is surfacing

Buzz score total 58.8

This all-time snapshot uses the same composite formula as Trending across a 30-year evidence window, rather than a current rolling window.

Buzz score components · mention 20.8 · diversity 13.0 · KEV 25.0 · OTX 0.0 · PoC 0.0
Mention score
20.8
7 evidence mentions in the snapshot
Diversity score
13.0
4 sources across 2 categories
KEV score
25.0
Known exploited vulnerability present
OTX score
0.0
0 OTX pulses
PoC score
0.0
0 repos · best confidence N/A
Best PoC traction
0
Maximum stars on a matched PoC repo

Why it matters now

Mention timeline

Total mentions
0
within the 30d window
Peak daily
0
highest bucket

Evidence

Source links by recency

Newest mentions first
7 source links · newest first
  • Cisco Patches Actively Exploited Flaws in Carrier-Grade RoutersSecurityWeek

    Cisco this week released patches for two high-severity vulnerabilities in IOS XR software that have been actively exploited in attacks for over a month.

    newswww.securityweek.comSep 30, 2020, 12:46 PM
  • Cisco fixes actively exploited issues in IOS XR Network OSSecurity Affairs

    Cisco addressed two actively exploited DoS vulnerabilities that reside in the IOS XR software that runs on multiple carrier-grade routers. Cisco addressed two high severity memory exhaustion DoS vulnerabilities that reside in the IOS XR Network OS that runs on multiple carrier-grade routers. The company confirmed that both vulnerabilities are actively exploited in attacks in the wild. […]

    newssecurityaffairs.comSep 30, 2020, 5:56 AM
  • 7th September – Threat Intelligence BulletinCheck Point Research

    For the latest discoveries in cyber research for the week of 7th September 2020, please download our Threat Intelligence Bulletin. Top Attacks and Breaches More than a dozen European ISPs have reported DDoS attacks targeting their DNS infrastructure. The attacks reached 300Gbit/s in volume and were part of an extortion attempt, likely related to last […]

    vendorresearch.checkpoint.comSep 7, 2020, 3:48 PM
  • Cisco Says Hackers Targeting Zero-Days in Carrier-Grade RoutersSecurityWeek

    Cisco has warned that hackers are targeting not one, but two unpatched vulnerabilities in the DVMRP feature of IOS XR software that runs on many carrier-grade routers.

    newswww.securityweek.comSep 1, 2020, 6:56 PM
  • Attackers are exploiting two zero-day flaws in Cisco enterprise-grade routersHelp Net Security

    A technical support intervention has revealed two zero-day vulnerabilities in the OS running on Cisco enterprise-grade routers that attackers are trying to actively exploit. Cisco plans to release software updates to plug these security holes, but in the meantime administrators are advised to implement one or all of the provided mitigations. About the vulnerabilities The two zero-day flaws – CVE-2020-3566 and CVE-2020-3569 – affect the Distance Vector Multicast Routing Protocol (DVMRP) feature of Cisco IOS … More →

    newswww.helpnetsecurity.comSep 1, 2020, 9:07 AM
  • Hackers are trying to exploit DoS flaw in Cisco IOS XR software running in carrier-grade routersSecurity Affairs

    Cisco warns that threat actors are attempting to exploit a high severity DoS flaw in its Cisco IOS XR software that runs on carrier-grade routers. Cisco warned over the weekend that attackers are trying to exploit a high severity memory exhaustion denial-of-service (DoS) vulnerability (CVE-2020-3566) affecting the Cisco IOS XR Network OS that runs on carrier-grade routers. Cisco IOS XR […]

    newssecurityaffairs.comAug 31, 2020, 2:29 PM
  • Attackers Actively Targeting Cisco IOS XR VulnerabilitySecurityWeek

    Cisco over the weekend published information on a vulnerability (CVE-2020-3566) in the IOS XR software that could be exploited to cause a denial of service condition.

    newswww.securityweek.comAug 31, 2020, 1:47 PM

Exploit code

Public exploit repository references

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0 repository references · best confidence N/A · max 0 stars
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