CVE-2020-3449 Details
A vulnerability in the Border Gateway Protocol (BGP) additional paths feature of Cisco IOS XR Software could allow an unauthenticated, remote attacker to prevent authorized users from monitoring the BGP status and cause the BGP process to stop processing new updates, resulting in a denial of service (DOS) condition. The vulnerability is due to an incorrect calculation of lexicographical order when displaying additional path information within Cisco IOS XR Software, which causes an infinite loop. An attacker could exploit this vulnerability by sending a specific BGP update from a BGP neighbor peer session of an affected device; an authorized user must then issue a show bgp command for the vulnerability to be exploited. A successful exploit could allow the attacker to prevent authorized users from properly monitoring the BGP status and prevent BGP from processing new updates, resulting in outdated information in the routing and forwarding tables.
View at NVD
Exploit prediction scoring system (EPSS) score for CVE-2020-3449
EPSS (Exploit Prediction Scoring System): EPSS predicts the likelihood that a vulnerability will be exploited in the wild. A higher percentage means a greater chance of an exploit occurring. The EPSS model produces a probability score between 0 and 1 (0 and 100%).
0.47 Probability of exploitation activity being observed over the next 30 days (64rd percentile)
CVSS score for CVE-2020-3449
CVSS (Common Vulnerability Scoring System): An open framework owned and managed by FIRST.Org, Inc. that assigns a numerical score from 0 to 10 to software vulnerabilities to indicate their severity.
4.3 Medium
Products affected by CVE-2020-3449
IOS XR 5.2.4
IOS XR 5.3.2
IOS XR 6.0.2
IOS XR 6.1.4
IOS XR 6.2.25
DVE Score by Bitsight AI
DVE scores complement traditional static scoring systems like CVSS with Bitsight AI powered real-time threat intelligence and underground cyber criminal activity so that security teams can reduce alert fatigue and focus on vulnerabilities most likely to be exploited.
Not available
More on DVE scores

CVE-2020-3449 Global Footprint

Top 10 Identified Countries

Country Observations Percentage
ZW 185 49.73%
RU 40 10.75%
ZA 30 8.06%
KN 16 4.30%
HU 15 4.03%
IN 11 2.96%
KZ 11 2.96%
VN 10 2.69%
MM 9 2.42%
PH 8 2.15%

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CVE-2020-3449 Industry Footprint

Top 10 Identified Industries

*Service provider organizations (typically Technology and Telecommunications) are disproportionally represented in the results given their upstream ownership of end-user infrastructure. See our FAQs.

Industry* Observations Percentage
Telecommunications 60 80.00%
Government/Politics 12 16.00%
Technology 2 2.67%
Manufacturing 1 1.33%

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