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CVE mentions, exploit signals, and PoC evidence in one fast public view.

CVE detail

CVE-2020-3398

A vulnerability in the Border Gateway Protocol (BGP) Multicast VPN (MVPN) implementation of Cisco NX-OS Software could allow an unauthenticated, remote attacker to cause a BGP session to repeatedly reset, causing a partial denial of service (DoS) condition due to the BGP session being down. The vulnerability is due to incorrect parsing of a specific type of BGP MVPN update message. An attacker could exploit this vulnerability by sending this BGP MVPN update message to a targeted device. A successful exploit could allow the attacker to cause the BGP peer connections to reset, which could lead to BGP route instability and impact traffic. The incoming BGP MVPN update message is valid but is parsed incorrectly by the NX-OS device, which could send a corrupted BGP update to the configured BGP peer. Note: The Cisco implementation of BGP accepts incoming BGP traffic from only explicitly configured peers. To exploit this vulnerability, an attacker must send a specific BGP MVPN update message over an established TCP connection that appears to come from a trusted BGP peer. To do so, the attacker must obtain information about the BGP peers in the trusted network of the affected system.

CVSS 8.6 · HighBuzz score 17.5

Buzz score

Why this CVE is surfacing

Buzz score total 17.5

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 11.0 · diversity 6.5 · KEV 0.0 · OTX 0.0 · PoC 0.0
Mention score
11.0
2 evidence mentions in the snapshot
Diversity score
6.5
2 sources across 1 categories
KEV score
0.0
No KEV entry observed
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
2 source links · newest first
  • Cisco addresses ten high-risk issues in NX-OS softwareSecurity Affairs

    Cisco addressed ten high-risk vulnerabilities in NX-OS software, including some issues that could lead to code execution and privilege escalation. Cisco this week released security patches to address ten high-risk vulnerabilities in NX-OS software, including some flaws that could lead to code execution and privilege escalation. The first issue, tracked as CVE-2020-3517, is a DoS […]

    newssecurityaffairs.comAug 28, 2020, 7:59 AM
  • Cisco Patches High-Severity Vulnerabilities in NX-OS SoftwareSecurityWeek

    Cisco this week released patches for ten high-risk vulnerabilities in NX-OS software, including some that could lead to code execution and privilege escalation.

    newswww.securityweek.comAug 27, 2020, 7:27 PM

Exploit code

Public exploit repository references

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0 repository references · best confidence N/A · max 0 stars
No public PoC repositories have been matched yet.

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